Investigators told the Denver Post “nothing” they have discovered leads them to believe the head injury Sperbeck suffered is a law enforcement issue.

Sperbeck, who was Elway’s agent, suffered the fatal fall last Saturday at the Madison Club, a private country club in California. Immediately following the accident, Elway’s party called 911.

Former NFL star John Elway's longtime business partner and former agent has died after reportedly falling from a golf cart. Jeff Sperbeck, 62, died Wednesday from injuries suffered in an accident Saturday evening in La Quinta, California, the Riverside County Coroner confirmed to ABC News.