Fond du Lac police are investigating several reports of gunshots fired in the city Monday night. Police say no injuries or property damage was reported. The first report came in shortly before 10:30pm of shots apparently fired from a vehicle in the 500 block of 4th St. Officers found handgun shell casings in the street but did not locate any suspects or a suspect vehicle. Initial information from witnesses indicates the suspect vehicle may be a dark colored passenger car. About a half hour later police received numerous additional reports of shots fired at various locations in the city. Police checked these locations and found no evidence of gunshots. Anyone having information regarding these incidents should contact Lead Detective Steve Kaufman at 920-322-3725 or the Fond du Lac Police Department Crime Alert number at 920-322-3740.