Authorities initially believed the death was a suicide, but now do not believe it was suicide. Police are unsure exactly how the man died, but confirmed that the injury was not a gunshot wound. However, a semiautomatic pistol was found 15 feet from the body.
Police must wait for an autopsy from the coroner's office. The victim's name has not yet been released.
Investigators are hoping witnesses come forward. Anyone with information is urged to call the LAPD Northeast detectives at (213) 485-2563.
City News Service contributed to this story.