Update, 2:40 p.m.
The Brown County District Attorney's office says Juan Maravilla will not appear in court today, and charges will not be filed today.
He is being held on a probation hold from a previous incident.
GREEN BAY (WLUK) -- A Brown County man is in custody after Green Bay police say autopsy results of a 16-month-old girl revealed repeated acts of abuse over a course of time.
Police requested charges against Juan J. Maravilla, 30, of first-degree reckless homicide, and child Abuse - intentionally cause harm. Formal charges have not been filed yet.
Police say it's the worst case of child abuse they've ever seen.
"An investigation of this magnitude, of this severity, is very concerning for the community because the community needs closure," says Capt. Kevin Warych, Green Bay Police Department. "When they hear about a baby who had no recourse and had no way to defend him or herself and be susceptible with such violent behavior, we as the police department, we as a community, want to know the person is in jail who is held responsible for this action."
Police were called about a toddler's death on May 25. The little girl had been taken to St. Mary's Hospital by her mother. The baby was already dead before going into the hospital.
During questioning, officials say Maravilla's responses led investigators to believe he was responsible for the abuse.
Maravilla is the boyfriend of the mother but not the father of the child who died.
The couple shares one child together, who is currently in custody of child protective services. Police say the mother may face criminal charges.
Maravilla is scheduled to appear in court Tuesday afternoon.
FOX 11 News will continue to update this story.