KILLER To Victims: 'F*** All Of You'

T.J. Lane, who appeared in court Tuesday morning wearing a t-shirt with the word "KILLER" in marker across his chest, will spend the rest of his life in prison for the murder of three teenagers at an Ohio high school.

Going against the recommendation of his counsel, Lane addressed the courtroom before learning his fate. He smiled periodically and showed little remorse for his actions.

"F--- all of you," he said, before raising his middle finger at the victims' families, according to the Plain Dealer.

On Feb. 27, 2012, Lane, then 17, entered Chardon High School, east of Cleveland and opened fire, killing Daniel Parmertor and Demetrius Hewlin, both 16, and Russell King Jr., 17. Three other students were wounded.

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Nearly one year later, Lane pleaded guilty to three counts of aggravated murder, two counts of attempted aggravated murder and one count of felonious assault.

Lane received three life sentences without the possibility of parole. Because he was a juvenile at the time of the incident, Lane could not face the death penalty.

WATCH: Lane's Vulgar Statement
Footage contains language that may be unsuitable for some audiences

More from the Associated Press:

By THOMAS J. SHEERAN

CHARDON, Ohio (AP) — Wearing a T-shirt with "killer" scrawled across it, a teenager cursed and gestured obscenely as he was given three life sentences Tuesday for shooting to death three students in an Ohio high school cafeteria.

T.J. Lane, 18, had pleaded guilty last month to shooting at students in February 2012 at Chardon High School, east of Cleveland. Investigators have said he admitted to the shooting but said he didn't know why he did it.

Before the case went to adult court last year, a juvenile court judge ruled that Lane was mentally competent to stand trial despite evidence he suffers from hallucinations, psychosis and fantasies.

Lane was defiant during the sentencing, smiling and smirking throughout, including while four relatives of victims spoke.

After he came in, he calmly unbuttoned his blue dress shirt to reveal the T-shirt reading "killer," which the prosecutor noted was similar to one he wore during the shooting.

At one point, he swiveled around in his chair toward the gallery where his own family members and those of the slain teenagers were sitting and spoke suddenly, surprising even his lawyer.

"The hand that pulls the trigger that killed your sons now masturbates to the memory," he said, then cursed at and raised his middle finger toward the victims' relatives.

A student who was wounded in the rampage dismissed the outburst.

"He said it like a scared little boy and couldn't talk slow enough that anyone could understand him," said Nate Mueller, who was nicked in the ear in the shooting.

Dina Parmertor, mother of victim Daniel, called Lane "a pathetic excuse for a human being" and wished upon him "an extremely, slow torturous death." She said she has nightmares and her family has been physically sick over the crimes.

"From now on, he will only be a killer," she said, as Lane's smile widened. "I want him to feel my anger toward him."

Prosecutors say Lane took a .22-caliber pistol and a knife to the school and fired 10 shots at a group of students in the cafeteria. Daniel Parmertor and Demetrius Hewlin, both 16, and Russell King Jr., 17, were killed.

Lane was at Chardon waiting for a bus to the alternative school he attended, for students who haven't done well in traditional settings.

Lane had pleaded guilty last month to three counts of aggravated murder, two counts of attempted aggravated murder and one count of felonious assault.

Life imprisonment without parole was the maximum sentence Lane faced. He wasn't eligible for the death penalty because he was 17 at the time of the shootings. Relatives of the slain students indicated earlier they wanted Lane to get the maximum sentence.

TJ Lane

T.J. Lane smirks as he listens to the judge during sentencing Tuesday, March 19, 2013, in Chardon, Ohio. Lane, was given three lifetime prison sentences without the possibility of parole Tuesday for opening fire last year in a high school cafeteria in a rampage that left three students dead and three others wounded. Lane, 18, had pleaded guilty last month to shooting at students in February 2012 at Chardon High School, east of Cleveland. Investigators have said he admitted to the shooting but said he didn't know why he did it. Before the case went to adult court last year, a juvenile court judge ruled that Lane was mentally competent to stand trial despite evidence he suffers from hallucinations, psychosis and fantasies. (AP Photo/The News-Herald, Duncan Scott, Pool)

T.J. Lane

T.J. Lane sits in court during sentencing Tuesday, March 19, 2013, in Chardon, Ohio. Lane, was given three lifetime prison sentences without the possibility of parole Tuesday for opening fire last year in a high school cafeteria in a rampage that left three students dead and three others wounded. Lane, 18, had pleaded guilty last month to shooting at students in February 2012 at Chardon High School, east of Cleveland. Investigators have said he admitted to the shooting but said he didn't know why he did it. Before the case went to adult court last year, a juvenile court judge ruled that Lane was mentally competent to stand trial despite evidence he suffers from hallucinations, psychosis and fantasies. (AP Photo/The News-Herald, Duncan Scott, Pool)

TJ Lane

T.J. Lane unbuttons his shirt during sentencing Tuesday, March 19, 2013, in Chardon, Ohio. Lane, was given three lifetime prison sentences without the possibility of parole Tuesday for opening fire last year in a high school cafeteria in a rampage that left three students dead and three others wounded. Lane, 18, had pleaded guilty last month to shooting at students in February 2012 at Chardon High School, east of Cleveland. Investigators have said he admitted to the shooting but said he didn't know why he did it. Before the case went to adult court last year, a juvenile court judge ruled that Lane was mentally competent to stand trial despite evidence he suffers from hallucinations, psychosis and fantasies. (AP Photo/The News-Herald, Duncan Scott, Pool)

Chardon High School Shooting

Students leave with parents from Maple Elementary School after a shooting at Chardon High School Monday. Students assembled at Maple Elementary School after a shooting took place at the high school. A gunman opened fire inside the high school's cafeteria at the start of the school day, killing three students and wounding two others, officials said. A suspect is in custody. (AP Photo/Tony Dejak)

Ohio Shooting

Community members attend a during a prayer service for victims of a school shooting at Chardon Assembly of God in Chardon, Ohio on Feb. 27, 2012. A gunman opened fire inside the Chardon High School's cafeteria at the start of the school day Monday, killing three students and wounding two others.
Community members attend a during a prayer service for victims of a school shooting at Chardon Assembly of God in Chardon, Ohio on Feb. 27, 2012. A gunman opened fire inside the Chardon High School's cafeteria at the start of the school day Monday, killing three students and wounding two others.

Demetrius Hewlin

Demetrius Hewlin, a junior, was one of three students taken by helicopter to a local hospital following the shooting. He died. <em>Photo  provided via <a href="https://www.facebook.com/pages/RIP-Demetrius-Hewlin/115955785195928?sk=wall" target="_hplink">Facebook</a> tribute.  </em>

Danny Parmertor

Danny Parmertor, 16, a junior, was shot along with several classmates while waiting for a bus. Parmertor was airlifted to a hospital and died shortly after. <em>Photo provided via <a href="https://www.facebook.com/pages/RIP-Danny-Parmertor/121146101345306" target="_hplink">Facebook</a>   tribute.</em>

Russell King

 Russell King Jr., 17, was pronounced brain dead shortly after the shooting and died the next day. <em>Photo provide via <a href="https://www.facebook.com/pages/RIP-Russell-King/385026981508707" target="_hplink">Facebook</a> tribute.  </em>
Russell King Jr., 17, was pronounced brain dead shortly after the shooting and died the next day. Photo provide via Facebook tribute.

Ohio High School Shooting

A FBI agent speaks with people in front of Chardon High School where a shooting took place on Feb. 27, 2012. A gunman, believed to be a student, opened fire inside the high school cafeteria, immediately killing three students and wounding two others.
A FBI agent speaks with people in front of Chardon High School where a shooting took place on Feb. 27, 2012. A gunman, believed to be a student, opened fire inside the high school cafeteria, immediately killing three students and wounding two others.

Ohio Shooting

Flags fly at half staff in front of the town hall in Chardon, Ohio for the victims of an early morning school shooting on Feb. 27, 2012. A gunman opened fire inside the high school's cafeteria at the start of the school day, killing three students and wounding two others.
Flags fly at half staff in front of the town hall in Chardon, Ohio for the victims of an early morning school shooting on Feb. 27, 2012. A gunman opened fire inside the high school's cafeteria at the start of the school day, killing three students and wounding two others.

TJ Lane

This February 27, 2012 photograph shows a picture of Chardon High School shooter T.J. Lane posing on his Facebook page. Lane, opened fire with a handgun on a group of fellow students at Chardon High shortly after the start of the school day on Monday, killing three and wounding two others.
This February 27, 2012 photograph shows a picture of Chardon High School shooter T.J. Lane posing on his Facebook page. Lane, opened fire with a handgun on a group of fellow students at Chardon High shortly after the start of the school day on Monday, killing three and wounding two others.

Ohio Shooting

An Ohio Highway Patrol helicopter takes off from the rear of Chardon High School in Chardon, Ohio on Feb. 27, 2012. A gunman opened fire inside the high school's cafeteria at the start of the school day Monday, killing three students and wounding two others, officials said.
An Ohio Highway Patrol helicopter takes off from the rear of Chardon High School in Chardon, Ohio on Feb. 27, 2012. A gunman opened fire inside the high school's cafeteria at the start of the school day Monday, killing three students and wounding two others, officials said.

Ohio School Shooting: Prayer Service

Alissa Sully, 17, hugs a friend before a prayer service for victims of a school shooting at Chardon Assembly of God in Chardon, Ohio Monday, Feb. 27, 2012. A gunman opened fire inside the high school's cafeteria at the start of the school day Monday, killing three students and wounding two others. (AP Photo/Mark Duncan)
Alissa Sully, 17, hugs a friend before a prayer service for victims of a school shooting at Chardon Assembly of God in Chardon, Ohio Monday, Feb. 27, 2012. A gunman opened fire inside the high school's cafeteria at the start of the school day Monday, killing three students and wounding two others. (AP Photo/Mark Duncan)

Ohio School Shooting

A woman and her children walk down a back street near Chardon High School in Chardon, Ohio Monday, Feb. 27, 2012. A gunman opened fire inside the high school's cafeteria at the start of the school day Monday, killing three students and wounding two others, officials said. Special Agent Vicki Anderson said Monday the shooter was taken into custody near his car about half a mile (one kilometer) away from the high school. (AP Photo/Mark Duncan)

Four Students Injured, Two Killed In Ohio High School Shooting

A sign in front of Chardon High School where a shooting took place on Feb. 27, 2012. A gunman, believed to be a student, opened fire inside the high school cafeteria, immediately killing one student and wounding two others. Two others later died from the injuries.
A sign in front of Chardon High School where a shooting took place on Feb. 27, 2012. A gunman, believed to be a student, opened fire inside the high school cafeteria, immediately killing one student and wounding two others. Two others later died from the injuries.

Ohio School Shooting: Press Conference

Chardon School Superintendant Joe Bergant speaks to the media during a press conference at Chardon High School where a shooting took place on Feb. 27, 2012 in Chardon, Ohio. A gunman, believed to be a student, opened fire inside the high school cafeteria, killing three students and wounding two others.
Chardon School Superintendant Joe Bergant speaks to the media during a press conference at Chardon High School where a shooting took place on Feb. 27, 2012 in Chardon, Ohio. A gunman, believed to be a student, opened fire inside the high school cafeteria, killing three students and wounding two others.

Ohio High School Shooting

Doug Gasper, a ninth-grader at Chardon High School, is hugged by his mother, Sandy, as they leave Maple Elementary School Monday, Feb. 27, 2012, in Chardon, Ohio. Students assembled at Maple Elementary School after a shooting took place at the high school. A gunman opened fire inside the high school's cafeteria at the start of the school day, killing three students and wounding two others, officials said. A suspect is in custody. (AP Photo/Tony Dejak)

Ohio High School Shooting: Police Search

Investigative agents search a home several miles from the shooting Monday, Feb. 27, 2012, in Chardon, Ohio. A gunman opened fire inside a high school cafeteria at the start of the school day Monday, immediately killing three students and wounding two others, authorities said. A suspect believed to be a student was arrested a short distance away. (AP Photo/Tony Dejak)

Ohio High School Shooting: Evidence Search

FBI and local police investigators search for evidence in a rural area of Chardon Township, Ohio Monday, Feb. 27, 2012. A gunman opened fire inside the Chardon High School cafeteria at the start of the school day Monday, killing three students and wounding two others, officials said. (AP Photo/Mark Duncan)
FBI and local police investigators search for evidence in a rural area of Chardon Township, Ohio Monday, Feb. 27, 2012. A gunman opened fire inside the Chardon High School cafeteria at the start of the school day Monday, killing three students and wounding two others, officials said. (AP Photo/Mark Duncan)

Ohio High School Shooting: Prayer Service

Rev. Jeff Johnson, left, and Bill Mullett lead prayers during a service for victims of a school shooting at Chardon Assembly of God in Chardon, Ohio Monday, Feb. 27, 2012. A gunman opened fire inside the high school's cafeteria at the start of the school day Monday, killing three students and wounding two others. (AP Photo/Mark Duncan)
Rev. Jeff Johnson, left, and Bill Mullett lead prayers during a service for victims of a school shooting at Chardon Assembly of God in Chardon, Ohio Monday, Feb. 27, 2012. A gunman opened fire inside the high school's cafeteria at the start of the school day Monday, killing three students and wounding two others. (AP Photo/Mark Duncan)

Ohio High School Shooting: Press Conference

Geauga County Sheriff Dan McClelland addresses the media regarding an early morning shooting at Chardon High School in Chardon, Ohio Monday afternoon, Feb. 27, 2012. A gunman opened fire inside the school's cafeteria at the start of the school day Monday, killing three students and wounding two others. (AP Photo/Mark Duncan)
Geauga County Sheriff Dan McClelland addresses the media regarding an early morning shooting at Chardon High School in Chardon, Ohio Monday afternoon, Feb. 27, 2012. A gunman opened fire inside the school's cafeteria at the start of the school day Monday, killing three students and wounding two others. (AP Photo/Mark Duncan)

OHIO SCHOOL SHOOTING

Map locates Chardon, Ohio, site of a school shooting
Map locates Chardon, Ohio, site of a school shooting

Search For Ohio High School Shooter

A deputy sheriff searches a wooded area with his gun drawn several miles from Chardon High School in Chardon, Ohio, Monday, Feb. 27, 2012. A gunman opened fire inside the high school cafeteria at the start of the school day Monday, killing three students and wounding two others, authorities said. A suspect believed to be a student was arrested a short distance away. (AP Photo/Tony Dejak)

Ohio Shooting

A group of students and parents pray for victims of a school shooting on the square in Chardon, Ohio on Feb. 28, 2012. A gunman opened fire inside the Chardon High School cafeteria at the start of the school day Monday. Three of the victims have died and two others remain wounded.
A group of students and parents pray for victims of a school shooting on the square in Chardon, Ohio on Feb. 28, 2012. A gunman opened fire inside the Chardon High School cafeteria at the start of the school day Monday. Three of the victims have died and two others remain wounded.

Ohio Shooting

A group of students and parents pray for victims of a school shooting on the square in Chardon, Ohio on Feb. 28, 2012. A gunman opened fire inside the Chardon High School cafeteria at the start of the school day Monday. Three of the victims have died and two others remain wounded.
A group of students and parents pray for victims of a school shooting on the square in Chardon, Ohio on Feb. 28, 2012. A gunman opened fire inside the Chardon High School cafeteria at the start of the school day Monday. Three of the victims have died and two others remain wounded.

TJ Lane

T.J. Lane, a suspect in Monday's shooting of five students at Chardon High School is taken into juvenile court by Geauga County deputies in Chardon, Ohio on Feb. 28, 2012. Three of the five students wounded in the attacks have since died.
T.J. Lane, a suspect in Monday's shooting of five students at Chardon High School is taken into juvenile court by Geauga County deputies in Chardon, Ohio on Feb. 28, 2012. Three of the five students wounded in the attacks have since died.

Candlelight Vigil

Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Feb. 28, 2012.
Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Feb. 28, 2012.

Candlelight Vigil

Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Feb. 28, 2012.
Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Feb. 28, 2012.

Candlelight Vigil

Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Feb. 28, 2012.
Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Feb. 28, 2012.

Candlelight Vigil

Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Feb. 28, 2012.
Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Feb. 28, 2012.

Candlelight Vigil

Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Feb. 28, 2012.
Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church in Chardon, Ohio on Feb. 28, 2012.

Candleight Vigil

Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church on February 28, 2012 in Chardon, Ohio. Gunman and student TJ Lane opened fire inside the Chardon High School cafeteria that left 3 students dead and two injured.
Students and those in the community embrace one another as they hold a candlelight vigil at St Mary's of the Assumption Church on February 28, 2012 in Chardon, Ohio. Gunman and student TJ Lane opened fire inside the Chardon High School cafeteria that left 3 students dead and two injured.

Red Ribbon

Heidi Marks finishes tying a red ribbon around the tree in front of her home outside Chardon High School, where her son David, 17, is a student in Chardon, Ohio on February 28, 2012. Gunman and student TJ Lane opened fire inside the Chardon High School cafeteria that left 3 students dead and two injured.
Heidi Marks finishes tying a red ribbon around the tree in front of her home outside Chardon High School, where her son David, 17, is a student in Chardon, Ohio on February 28, 2012. Gunman and student TJ Lane opened fire inside the Chardon High School cafeteria that left 3 students dead and two injured.

TJ Lane

T. J. Lane,  center, is led from Juvenile Court in Chardon, Ohio Tuesday, Feb. 28, 2012. Lane, 17, admitted taking a .22-caliber pistol to Chardon High School Monday, along with a knife, and firing 10 shots at a group of students sitting at a cafeteria table Monday morning, Prosecutor David Joyce said.
T. J. Lane, center, is led from Juvenile Court in Chardon, Ohio Tuesday, Feb. 28, 2012. Lane, 17, admitted taking a .22-caliber pistol to Chardon High School Monday, along with a knife, and firing 10 shots at a group of students sitting at a cafeteria table Monday morning, Prosecutor David Joyce said.

Danny Parmertor

Danny Parmertor, 16, a junior, was shot along with several classmates while waiting for a bus. Parmertor was airlifted to a hospital and died shortly after. <em>Photo provided via <a href="https://www.facebook.com/pages/RIP-Danny-Parmertor/121146101345306" target="_hplink">Facebook</a>   tribute.</em>

This article originally appeared on HuffPost.