[Arnold Ross]also was indicted on a charge of sexual battery on a juvenile in the June 6 death of his girlfriend's 8-month-old son, Da-Von Lonzo.

Ross was watching the child in an apartment at 1656 Gary Court, where, according to his initial statement to police, the child fell down the stairs. The infant was pronounced dead at a hospital, where doctors noted he had severe head trauma and a rectal injury. The Jefferson Parish coroner's office determined the death was a homicide.

Ross later admitted to beating the infant, causing the child to lose consciousness, because he "defecated several times in a short period of time," Jefferson Parish Sheriff's Office detective Jeff Rodrigue wrote in a probable cause affidavit.

Ross said he inserted three fingers in Da-Von's anus because he was "only trying to help the child stop defecating," according to the affidavit.