Police say was last seen Friday, April 3. Kotkarczyk was last seen wearing camouflage pants and a gray or green hooded sweatshirt. According to police, it is also possible that he may be wearing black pants with a white stripe and a red and white shirt.
Police say foul play is not suspected.
Anyone with information on Kotkarczyk's whereabouts are asked to call the Allen Park Police Department at 313-386-7800.