This undated photo provided by the vkontakte website shows Dzhokhar Tsarnaev. Dzhokhar Tsarnaev has been on the run, described as "armed and dangerous" and suspected of the Boston Marathon bombing. His brother, Tamerlan, was killed during a violent police chase. The two ethnic Chechen brothers came from Dagestan, a Russian republic bordering the province of Chechnya. (Credit: AP)
- 5:10 p.m. Thursday: The FBI releases photos and videos of two unnamed suspects that investigators believe are behind Monday's Boston Marathon bombing. Two men are carrying backpacks and wearing hats, one black and one white worn backwards.
- Approximately 10:20 p.m. Thursday: Robbery takes place at a 7/11 convenience store in Cambridge, near the MIT campus. Bombing suspects originally believed to be behind the crime, although that was later disputed and police at a press conference on Friday night said the suspects did not rob a convenience story.
- 10:30 p.m. Thursday: A shooting takes place outside a MIT building, leaving one MIT campus police officer shot multiple times. The officer would later be pronounced dead at Massachusetts General Hospital. Shortly after finding the MIT campus officer shot in his vehicle, police received reports of an armed carjacking by two males in the area of Third Street in Cambridge. The victim was carjacked at gunpoint by two males and kept in the carjacked Mercedes SUV for approximately a half hour. The victim was then released uninjured at a gas station on Memorial Drive in Cambridge.
Police immediately begin a search for the vehicle and were in pursuit of it into Watertown, Mass. Authorities said the suspects threw explosives from the car as police followed it. The police and suspects exchanged gunfire in the area of Dexter and Laurel Streets, and one of the suspects was critically injured. The suspect was captured and transported to the hospital. A transit police officer was also seriously injured.
The second suspect fled on foot and police said they did not have enough resources to respond to the injured and establish a perimeter.
- Approximately 1:00 a.m. Friday: Reports of "heavy gunfire" and explosions are heard in Watertown. Dozens of police officers and FBI agents converge on a Watertown neighborhood.
- 1:35 am Friday: Injured suspect dies at hospital.
- 2:00 a.m. Friday: The FBI releases new photos of the suspects.
- 4:22 a.m. Friday: Boston Police and Cambridge Police Chief confirmed that the two men involved in the fatal shooting of an MIT campus police officer, and a shootout-chase scene into Watertown, were the same suspects believed to be involved in the Boston Marathon bombing. Officials confirm one suspect dead, the other still on the run.
Police release new image of suspect at large, taken from a surveillance photo at a 7/11 convenience store that was robbed several hours earlier.
- Approximately 4:30 a.m. Friday: Massachusetts state and Boston police hold a short outdoor news briefing. They tell people living in that section of eastern Watertown to stay in their homes.
"We believe this to be a terrorist," Boston police Commissioner Ed Davis said. "We believe this to be a man who came here to kill people."
- 5:02 a.m. Friday: NBC News reports, citing law enforcement sources, that the two suspects in the Boston Marathon bombings have international ties and have been in the U.S. legally for about a year.
- Approximately 6:35 a.m Friday.: The Associated Press reported that the bomb suspects are from a Russian region near Chechnya and lived in the United States for at least one year.
- Approximately 6:45 a.m. Friday: The Associated Press identifies the surviving Boston bomb suspect as 19-year-old Dzhokhar Tsarnaev.
- Approximately 7:05 a.m. Friday: NBC News and the AP report the bombing suspects are brothers of Chechen origin; had been legal permanent residents in the U.S. for one year; ages 19 and 20.
- 8:24 a.m. Friday: Fox News reports that the surviving brother identified himself as a Muslim on his Facebook page.
- 8:39 a.m. Friday: Police have surrounded a home in Watertown, Mass. Fox News reports gunfire and/or explosions were heard.
- Approximately 8:40 a.m. Friday: A U.S. law enforcement official and the uncle of the suspects confirmed that the name of the dead suspect is Tamerlan Tsarnaev, Dzhokhar Tsarnaev's older brother, age 26 and born in Russia.
- 9:10 a.m Friday: The Associated Press reports that the father of the two bombing suspects, Anzor Tsarnaev, said by telephone from Russia that his son who remains on the loose is a smart, accomplished young man:
"My son is a true angel," the elder Tsarnaev said. "Dzhokhar is a second-year medical student in the U.S. He is such an intelligent boy. We expected him to come on holidays here."
- 9:36 a.m. Friday: FBI releases most recent photo of Dzhokhar Tsarnaev.
- 10:03 a.m. Friday: Russian Today reports that the Tsarnaev family moved to Dagestan from Kyrgystan in 2001.
"He arrived at our school in first grade and left in second," Irina Bandurina, the secretary at Makhachkala's School No.1, told RT. "They arrived from Kyrgyzstan and departed to the US. I'm telling you they lived here for a year. Not the whole year. They arrived at the school in 2001 and departed in March 2002 ... There were four of them - two sisters and two brothers... It's written here that they are from Kyrgyzstan. They are Chechens."
- 10: 17 a.m. Friday: NBC News reports Tamerian Tsarnaev was found with an improvised explosive device on his body.
- 10:22 a.m. Friday: Boston police tweet license plate to wanted 1999 gray Honda CRV possibly connected to suspect.
- 10:28 a.m. Friday: UMass Dartmouth is closed and is in the process of a controlled evacuation of the campus. The action is in response to information that the suspect at large is a registered student.
- 10:45 a.m. Friday: Boston police tweet that they have located a 1999 gray Honda CRV that has been linked to the investigation: "Car being processed for evidence by authorities."
- 10:47 a.m. Friday: Police appear to be converging on a second location in Watertown, Mass.
- 10:55 a.m. Friday: Boston Globe reports that suspect has abandoned car and is believed to have fled on foot, tactical police searching 20-block area in Watertown.
- 11:29 a.m. Friday: Ruslan Tsarni, uncle of the two bombing suspects, said from his home in Maryland: "If you're alive, turn yourself in and ask for forgiveness...He put a shame on the Tsarni family and put a shame on the entire Chechen ethnicity."
Tsarni said, "I respect this country, I love this country."
- 11:41 a.m. Friday: ABC News reports that Anzor Tsarnaev, the father of the suspected bombers, called on his remaining son to give up peacefully, but said if he is killed, "all hell will break loose."
- 12: 35 p.m. Friday: Massachusetts State Police progress door to door, street to street searching for suspect in Watertown.
- 12:47 p.m. Friday: NBC News reports additional details about the carjacking and shootout that ended with the death of one of the suspected bombers. They reportedly told the driver of the Mercedes SUV they were behind the marathon bombings.
- 2:17 p.m. Friday: Suspects' aunt tells reporters that the older (deceased) brother hadn't been a devout Muslim until about two years ago, when he "started praying five times a day.
- 2:19 p.m. Friday: More details about the Tsarnaev brothers from CNN, including one of them became a U.S. citizen last Sept. 11:
"Dzhokhar Tsarnaev, 19, the Boston Marathon attack suspect now at large, came to the United States on July 1, 2002, at age 8 on a tourist visa, a federal source said. While here, he sought asylum and became a citizen on September 11, 2012.
His older brother Tamerlan Tsarnaev, who was killed in a shootout with police overnight, came to the United States four years after his brother, on Sept. 6, 2006, at the age of 20, the source said. He came legally but was not naturalized. He was a green card holder and in the country lawfully."
- 2:45 p.m. Friday: Multiple reports emerge that Tamerlan Tsarnaev was possibly married and had a 3-year-old daughter, but unconfirmed.
- Approximately 3:10 p.m. Friday: Russian video interview of suspects' father airs on American news. Father says "someone clearly framed them."
"I'm scared for my son, for his life. They should arrest him and bring him alive," the father said, according to a translator.
- 7:00 p.m. Friday -- A "barrage" of gunfire has just been heard in Watertown, Mass., NBC News and CNN report.
7:12 p.m. Friday -- Fox News reports a resident saw blood on the boat outside her home and called it in. WFXT-TV reports as many as 30 shots may have been fired. Repeating, "the suspect is down."
WFXT is airing footage of families evacuating the area.
- 7:28 p.m. Friday -- WFXT-TV, citing sources: "Suspect is alive, surrounded by law enforcement, but still moving."
- 8:49 p.m. Friday - Boston Police Twitter account: "Suspect in custody. Officers sweeping the area. Stand by for further info."
- 9:00 p.m. Friday-- The Boston Police Department tweets, "CAPTURED!!! The hunt is over. The search is done. The terror is over. And justice has won. Suspect in custody."