FRANKLIN, Wis. (CBS 58) -- Franklin police are investigating reports of an attempted assault of a 41-year-old Franklin woman along the Oak Leaf Trail on Thursday, June 11.

The incident happened somewhere between 9:00 p.m. and 9:15 p.m., between West Drexel Avenue, and West Puetz Road.

The suspect is described as being a tan skinned man, approximately 5-foot-10 inches, weighing between 150 and 180 pounds, with a muscular build.

Police say the suspect was dressed in all black with a face mask during the alleged assault and spoke with a deep voice. 

Following the incident, the suspect reportedly took off running northbound towards West Drexel Avenue on the trail. 

The Franklin Police Department is asking that anyone who may have information or was in the area during to the incident, to contact Detective Sergeant Mark Goers at (414) 425-2522.