NAPERVILLE, Ill. (CBS) — Police in Naperville are looking for a man who pretended to be a member of their force and pulled over a woman.

Around 9:30 p.m. Thursday, a woman driving by herself was stopped by a white car with red and white flashing lights near the intersection of Wolf’s Crossing Road and 248th Street in Naperville, according to Naperville police.

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After she was pulled over, the woman was approached by a man in his 30s, wearing a blue or black uniform with a hat, who made sexual comments toward her.

“He asked the woman for identification and made some sexually suggestive comments as to how she could get out of the ticket,” Naperville Police Sgt. Greg Bell said, adding that it was unclear whether the man had a weapon.

The woman was not harmed. She drove away from the scene and was not followed.

It was determined that no officer from the Naperville or Aurora police departments or the Will County Sheriff’s Office documented a traffic stop at that time or location.

The man was described as having a slender build and very short hair. He was seen driving a passenger car with no police markings.

Anyone who may have witnessed the traffic stop or was in the area of Wolf’s Crossing Road and 248th Street at that time is encouraged to call police at (630) 420-6726.

Naperville Police routinely use unmarked cars for traffic enforcement, the release said. Anyone who feels uncomfortable during an encounter can drive away with their hazard lights on and call 911 and ask the dispatcher to confirm whether the traffic stop is legitimate.

The Sun-Times Media Wire contributed to this report.

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