MILWAUKEE, WI (CBS 58) -- An argument between co-workers lead to gunfire late Saturday night in Milwaukee.   According to the Milwaukee Police Department, around 9 PM, the co-workers got into an argument and during the argument  a 42-year-old man was shot.   The shooting happened in the area of N 84^th Street and W Grantosa Drive.   The victim received what is described as a non-life threatening wound.  He was taken to a local hospital for treatment of his injury.   The MPD is currently looking for the known suspect