Arlington Heights police and firefighters responded to report of a battery victim about 10:15 p.m. Saturday at the backstretch at Arlington Park Racetrack. Arlington Heights police are investigating.
Police returned to the racetrack about 11:55 p.m. Saturday for a fight that had just occurred. There were no injuries reported, but one subject was reported to have had a knife. Arlington Heights police arrested one and transported to police headquarters just before 1:00 a.m. Sunday.