CHICAGO — Police are searching for a man who sexually abused a girl while on the No. 53 Pulaski bus in Irving Park Friday afternoon.

The incident occurred at 4:15 p.m. as the bus was going north at Irving Park Road.

The man sat next to the girl, rubbed his elbow against his chest before rubbing her left thigh with the back of his hand.

The girl got up to leave and the man cupped her buttocks.

The suspect is described as white or Indian and is in his 50s. He is 5-foot-10 and weighs approximately 160 pounds. He was wearing black pants and a green jacket. He also had a red bookbag.

Anyone with information should call police at 312-744-8200.