08/09/2012 05:49 pm ET Updated Aug 10, 2012

Fake Police Officer Assault 'Did Not Occur,' Sheriff's Office Says, Calling Off Community Alert (VIDEO)

Updated story

A sexual assault reported by a 33-year-old Sandwich, Ill. woman, allegedly committed by a man impersonating a police officer did not occur, the Kendall County Sheriff's Office has concluded.

The victim told police she was signaled to pull over while driving in Plano, Ill. around 6:45 p.m. Tuesday by a man in uniform driving a blue Ford Crown Victoria with flashing red and blue lights, whom she believed to be a police officer, the Chicago Tribune reports.

In a statement posted on the sheriff's office's Facebook page, the department cancels a previously issued community alert and concludes that it has been "determined that an assault did not occur and there was no police impersonator involved...There is no known threat to public safety, but we still urge the public to use caution."

Police arrived at the scene on Griswold Springs Road in unincorporated Plano after a passerby saw the woman emerge from a cornfield without pants on and called 911, according to NBC Chicago.

Kendall County Sheriff's deputies are warning area residents that dashboard lights and official-looking uniforms aren't difficult to obtain. On Wednesday night, they stopped cars along nearby roads to warn drivers about the attack and ask about other sightings of a man impersonating a police officer, CBS Chicago reports.

The Kendall County State's Attorney's Office is reviewing the case, according to Yorkville Patch. Felony charges have been filed against the woman for falsifying a police report.

Photo by davidsonscott15 on Flickr.