The unidentified man was on an elevated pedestrian walkway at Gillette Stadium before Sunday's New England Patriots game around 3:15 p.m. Sunday when he dived over the side, WCVB-TV, Boston, reported.

Witnesses told the broadcaster it appeared the man thought he would land in a snow bank but there wasn't any snow and he hit the ground head first and bounced after screaming on the way down.

"He was unconscious and unresponsive," said Scott Rogers of Foxborough Fire and Rescue.

Monday, the man was in the intensive care unit of Beth Israel Deaconess Medical Center in Boston, the Boston Globe said.

Several witnesses told police alcohol was involved in the stunt.