A 2-month-old baby died over the weekend and now his father, 19-year-old Xavier Richardson, is charged with murder.
"I've never seen anything like this in my life," said City Prosecutor Jeff Limbian.
Xavier Richardson, Jr. died at St. Elizabeth Hospital on Saturday night.
Police said when they found the infant, he was blue, not breathing and had signs of abuse.
"As a result of a horrific child abuse situation, this child has died," Limbian said.
The father is charged with murder, felonious assault and child endangerment.
Authorities said the baby's mother left the child in Richardson's care while she was at work.
Richardson told officials he was asleep, then he noticed the child gasping for air. The baby was taken to the hospital that night.
There were several injuries on the baby, including something Limbian said he's never seen before -- "absolutely horrifying bite marks."
"Injuries that no human being, particularly a baby, should have to suffer," he said.
An autopsy is being done on the infant. The charges could be increased in severity depending on what the coroner finds.
Investigators said in a case of "horrific child abuse," they found the 2-month-old with bite marks on him.