Austin Powell, 16, of Muskogee, Okla., has been reported missing.
Austin Powell was last seen wearing a white T- Shirt, black hoodie and white shoes, officials say.
Powell has proven medical or physical disability and is in imminent danger or of serious bodily injury or death, police say.
Officials say without his medication he is known to be suicidal.
Police say James Powell, 48, took Austin Powell and they may be in a 1994 blue Dodge 150.
Officials say James Powell took Austin Powell from 4001 W. 72nd St. S. around 3 p.m. today.