(Horicon) The Horicon Police Department is warning area residents about a possible suspicious vehicle. They say their office has received only one complaint of a maroon SUV stopping near a residential property, where someone exited, put up a ladder, and walked around on the home’s roof. Once done, the individual walked around the house for a bit. Authorities say if residents see something suspicious, call local law enforcement. Horicon Police say when reporting suspicious activity, it is helpful to give the most accurate description possible including a brief account of the activity.