Wisconsin Man Arrested in Toddler's Alleged Beating Death: 'Worst Case of Child Abuse' Ever Seen

A Wisconsin man is accused of killing his girlfriend’s 16-month-old daughter in what police have called “the worst case of child abuse [we] have ever seen.”

Juan J. Maravilla, 30, was charged with first degree reckless homicide and child abuse after the girl’s mother brought her bruised body to a Green Bay-area hospital on May 25 after she had died, Green Bay police tell PEOPLE.

Hospital staff ordered an autopsy immediately, and the “results revealed the toddler’s death was not the result of one act of abuse but repeated abuse over an extended period of time,” Cpt. Kevin Warych of the Green Bay Police Department alleges to PEOPLE.

Warych adds, “This is possibly the worst case of child abuse [we] have ever seen.”

Between the time of the girl’s death and her autopsy report, Maravilla was jailed for an unspecified alleged probation violation, Warych says. Jail records do not indicate the specifics of the alleged violation or the underlying offense.

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According to investigators, Maravilla, who is not the child’s father, made remarks to police allegedly implicating him in her abuse and neglect.

On Tuesday, Maravilla was charged in her death.

The investigation is still ongoing, Warych says. Maravilla has one newborn child with the victim’s mother.

Green Bay police would not comment on who the victim’s father is.

“The amount of bruising and signs of trauma were extreme,” Warych says. “This [is] a hard to investigate. It weighs on you heavily. Anytime you look at a child you see your own.”

Maravilla remains behind bars in Brown County Jail, jail records state. It is unclear at this time whether he has an attorney or has entered a plea.