An autopsy has not determined if the wound was self-inflicted.
San Bernardino County Sheriff's investigation had been looking for Stephens in the shooting of Darron Henderson on May 5. Investigators say Henderson was trying to stop a dispute between a mechanic and a group of men when Stephens shot him.
Last year, Stephens was allowed to pay football at Pasadena City College, although he was a registered sex offender who wore a GPS tracking ankle bracelet.
Stephens' coach Kenny Lawler has been on paid administrative leave from the college for allowing Stephens to pay despite his conviction.