According to police, residents on South Bend's south side should make sure to keep their curtains closed.
Residents from Ireland to Kern and from Miami to Ironwood have reported seeing a male outside of their homes in various states of undress.
Since May 15, 2007 the man has been spotted at least four times between midnight and 3am.
Tuesday night police received a report of a naked male in the 1400 block of Hampshire drive.
Police encourage residents to keep their curtains or blinds closed late at night and their property well lit.