A fan who experienced what a Denver fire department official said was a “severe fall” after Monday night’s football game at Sports Authority Field at Mile High has died of his injuries, the medical examiner’s office confirmed for the Denver Post. A spokesman for the Denver Medical Examiner’s office (via KDVR) said that the man, identified as 36-year-old Jason Coy, fell about 60 feet from a stairwell railing.

The Denver Fire Department said the incident occurred on the north side of the stadium just after the game, a Broncos win over the Texans, ended at around 9:45 p.m.. Coy was taken to Denver Health Medical Center, where he died.

“He fell backwards and just… every level,” stadium employee Michael Martinez told CBS Denver. “Each level that he fell down he hit his head and… it was pretty gruesome.”

“A fan was taken to the hospital after falling over a stairwell railing at Sports Authority Field at Mile High shortly after Monday night’s game,” Stadium Management Company, which operates the stadium, said in a statement. “Our thoughts are with the injured fan, and we are in the process of learning more about this incident from the Denver Police Department’s investigation.”

“The Denver Broncos are extremely saddened to learn that Jason Coy, the fan who fell over a stairwell railing at Monday night’s game, has passed away,” the team said in a statement. “Along with Stadium Management Company, we extend our deepest sympathies and condolences to his family and friends.

“Providing a safe, enjoyable environment for guests at Sports Authority Field at Mile High is the top priority for the Broncos and SMC. We’re reviewing this tragic incident and will continue to maintain all necessary safety measures for our fans.”

“It’s unclear to us right now whether there were drugs or alcohol involved,” said Denver Police Department spokesman Doug Schepman. “That would be part of the medical examiner’s investigation into this matter.”