Police are investigating the death of a New Hampshire man following an incident in the stands of a New England Patriots home game over the weekend, the county attorney’s office said.

Police and staff responded to the upper deck of Gillette Stadium shortly before 11 p.m. local time on Sunday. Dale Mooney, 53, of Newmarket, New Hampshire, “apparently needed medical attention,” the Norfolk County District Attorney’s Office said in a news release Monday.

Mooney was taken to a hospital, where he was pronounced dead, according to the news release.

The results of the autopsy are expected on Tuesday, according to a spokesman for the prosecutor’s office.

No further information was provided.

“The death of a 53-year-old New Hampshire man following an incident in the 300th bleacher of Gillette Stadium during the Sept. 17, 2023, game is, per normal protocol, under investigation by Massachusetts State Police assigned to the Norfolk District Attorney’s Office,” the statement said.

According to Joey Kilmartin of Nashua, New Hampshire, another spectator at Sunday’s game who spoke to the local media outlet. MassLive.com, the incident was precipitated by continuous disputes throughout the game between one section of the crowd and another. That back-and-forth culminated in a physical altercation near the end of the fourth quarter.

“The Dolphins fan walks up and clearly punches him in the face,” Kilmartin said. “[He] “He gets knocked out and you realize immediately that he’s not right.”

Mooney never got back up and paramedics arrived to perform CPR, said Kilmartin, who later gave his account to Foxborough police.

“It’s an unfortunate situation,” he said. “I feel bad for the family.”

Kilmartin shared video of the incident with WCVB-TV, an ABC affiliate in Boston, which posted footage of the incident.

He Miami Dolphins They defeated the Patriots in Sunday’s game.