Jan. 23 (UPI) — Ex-Philadelphia Eagles defensive tackle Kevin Johnson died of stab wounds and blunt head trauma he sustained while at a Los Angeles homeless encampment, Los Angeles County medical examiner records show.

Johnson, 55, died Wednesday. His death was ruled a homicide and remains under investigation.

Los Angeles police told ABC 7 News that officers responded at 8 a.m. local time Wednesday to a report of an unconscious man. Johnson was pronounced dead at the scene.

Investigators believe Johnson was living at the encampment, which is located in the Willowbrook area of Los Angeles.

The former NFL defensive lineman was a fourth-round pick by the New England Patriots in the 1993 NFL Draft. Johnson also spent time with the Minnesota Vikings and Oakland Raiders.

Johnson appeared in 17 games for the Eagles. He logged a career-high six sacks and a fumble return for a score over 11 appearances in 1995. He appeared in 15 games for the Raiders. Johnson totaled 54 combined tackles, seven sacks, a forced fumble and a fumble recovery. He made six starts during his short NFL tenure.

The former Texas Southern star also played in the Arena Football League.