The Manitowoc Police responded to a report of suspicious activity yesterday. The Police Department recived the tip at around 3:00 yesterday morning, in which the citizen said they saw a male subject attempting to open car doors. Officers found the man walking south on the Mariner’s Trail by Magnolia Ave. The man admitted to entering 5 unlocked vehicles in the area of the 1300 block of Oriole Drive and the 1700 block of Lilac Drive. The man was then arrested on multiple counts of theft, and was held in the Manitowoc County Jail. The Manitowoc Police Department want to remind citizens to lock their vehicles, garages, and houses. Also always report suspicious activity to the Manitowoc Police Department.