Ann Arbor police detectives released a sketch of a man who they say parked in front of a Dundee Drive home on July 14 and exposed himself to a teenage girl.
The man, who police say might be involved in other incidents in western Washtenaw County, is described as white, in his 40s, and has brown hair.
Police are working to identify this man, but say he looks older than the sketch.
He has a receding hairline and "beer belly," according to a wanted poster.
Investigators say he parked in front of the home at 12:45 a.m., made eye contact with a teenage girl who was working on a computer near a window and began to masturbate.
An interior light was on in his van during the incident, police said. According to the poster, the older model minivan is tan or light in color with a molding strip down the side that is possibly black. It has a square rear end, the poster says.
Detectives are investigating whether the incident is linked to a similar case two hours earlier on Frederick Drive and several incidents earlier this year in Dexter and Scio Township.
Anyone with information can call the department's tip line at (734) 794-6939.
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