California authorities say the death of Jeff Sperbeck in a golf cart accident appears to be a horrific accident.

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.

Sperbeck, 62, died on April 30 from a severe head injury he suffered falling off of a cart driven by Elway on Saturday, April 26. Authorities investigated the incident, which took place in California, and a new report from 9News' Mike Klis has uncovered a wealth of fresh details.