This 2004 photo supplied by NBC shows Najai Turpin of NBC's upcoming reality boxing show 'The Contender,' who committed suicide Monday, Feb. 14, 2005.

Police said the 23-year-old shot himself in the head at 4 a.m. Monday while sitting with his girlfriend in a parked car outside the West Philadelphia gym where he trained.

Investigators were unsure why he took his life.

(AP Photo/NBC Universal ,Chris Haston)