Dominick Brown-Hill, 21, of Penn Hills has been reported missing.
Brown-Hill is 6 feet tall and weights about 180 pounds. He was last seen on Thursday wearing a red Nike shirt with "Just Do It" written on the back, black basketball shorts, and gray and white sneakers.
A woman he was living with last heard from him at around 5 p.m. on Wednesday, according to the Pittsburgh Post-Gazette. He was reported missing on Monday.
Anyone with information is asked to call 911.