CINCINNATI (AP) —Buffalo Bills safety Damar Hamlin collapsed on the field and was administered CPR before being driven to a hospital, where the NFL said he was in critical condition, and Buffalo’s game against the Cincinnati Bengals was suspended for the night.

The NFL announced just over an hour after the injury that the game would not resume. When or if the teams would return to the field was not immediately clear.

”Our thoughts are with Damar and the Buffalo Bills. We will provide more information as it becomes available,” the league said in a statement. “The NFL has been in constant communication with the NFL Players Association which is in agreement with postponing the game.”

Hamlin collided with Bengals receiver Tee Higgins after a completion in what appeared to be a routine, if violent, tackle. He got to his feet, appeared to adjust his face mask with his right hand, and then fell backward about three seconds later and lay motionless.

Hamlin was treated on the field by team and independent medical personnel and local paramedics, the NFL said. He was surrounded by stunned players from both teams.

An ambulance was on the field four minutes after Hamlin collapsed, with many players in tears, including cornerback Tre’Davious White. The quarterbacks — Buffalo’s Josh Allen and Cincinnati’s Joe Burrow — embraced.

Hamlin collapsed at 8:55pm, and when he was taken off the field 16 minutes later, the Bills gathered in prayer. He was driven to University of Cincinnati Medical Center. Five minutes after the ambulance departed, the game was suspended, and players walked off the field slowly and into their locker rooms.

Hamlin’s uniform was cut off and he appeared to be getting CPR from medical personnel. ESPN reported on its telecast that Hamlin was also given oxygen.

A reporter at the game said it was “the most horrifying thing I have ever seen.”

"No one's been through this," longtime NFL quarterback Troy Aikman said on the ESPN telecast. "I've never seen anything like it, either."

Hamlin collapsed at 8:55 p.m. Eastern and the game was suspended 21 minutes later. Players walked off the field slowly and into their locker rooms.

The aftermath of the injury was reminiscent of when Bills tight end Kevin Everett lay motionless on the field after making a tackle on the second-half opening kickoff in Buffalo's 2007 season-opening game against the Denver Broncos.

Everett sustained a spinal cord injury that initially left him partially paralyzed.

The 24-year-old Hamlin spent five years of college at Pitt — his hometown — and appeared in 48 games for the Panthers over that span. He was a second-team All-ACC performer as a senior, was voted a team captain and was picked to play in the Senior Bowl.

He was drafted in the sixth round by the Bills in 2021, played in 14 games as a rookie and then became a starter this year once Micah Hyde was lost for the season to injury.

Entering the game, the 6-foot, 200-pound Hamlin had 91 tackles, including 63 solo tackles, and 1 1/2 sacks.

A tweet from the Pitt football account was simple and clear: "Damar Hamlin is the best of us. We love you, 3," the tweet said, referring to Hamlin by his college jersey number. "Praying for you."

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-MITCH STACY, AP Sports Writer