Cook County has charged a man from an unincorporated area near Arlington Heights with sexually assaulting a 2-month-old girl.
Joe Ybarra, 30, of the 2200 block of Nichols Road, is being held in the Cook County jail without bond on a charge of predatory criminal sexual assault of a child.
He was booked Saturday and is scheduled to appear in court Tuesday in Rolling Meadows.
Cook County authorities said Ybarra was drinking and doing cocaine with a woman on Oct. 19. At one point, he went into another room and sexually assaulted the baby, they said.
Authorities said that when another child in the room awoke and told Ybarra to stop, he slapped her and told her to shut up. That child told other adults, who called police, authorities said.