PAW PAW (AP) — Illinois State Police say they are looking for a man who they believe killed an eastern Illinois woman at a highway rest stop on Interstate 39.

Police said in a news release that 44-year-old Tonya D. Bargman of Monticello was found at the Willow Creek rest stop on I-39 in northern Illinois about 8:30 p.m. Tuesday. Surveillance video showed a man attacking her as she left a restroom at the rest stop.

The rest stop is just outside the small town of Paw Paw and about 40 miles south of Rockford. Monticello is 20 miles west of Champaign.

Police believe the attacker may be driving Bargman’s gray 2013 Nissan Altima.