Damar Hamlin, the Buffalo Bills safety, has suffered a serious injury during their game vs Cincinnati Bengals. After it was spotted that Hamlin was being given CPR, fans have begun wondering whether the 24-year-old has suffered a cardiac arrest.

One fan said, “Blunt force trauma to the chest (commonly seen in baseball) can cause Pulseless Electrical Activity aka cardiac arrest/cardiac death. Defibrillator won’t help if there’s no pulse. Hopefully Epinephrine available to restore cardiac rhythm. Prayers for Damar Hamlin. @BuffaloBills”

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Another said on Twitter, “Lord… what’s happened on MNF, Damar Hamlin in cardiac arrest on the field. I don’t see how they keep playing this game. I don’t think they should. #mnf”

WWE legend Jerry Lawler has said in a tweet, “I would be willing to bet that Damar Hamlin has suffered a cardiac arrest from the blunt trauma of that blow to his chest… I know what this is like from experience…”

The NFL has not released an official statement yet. The game has been temporarily suspended, according to a report by the Washington Post.

Fans are asking for the game to be suspended because of the on-field tragedy. Prayers are outpouring for the Buffalo Bills safety following the on-field tragedy.

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Joe Danneman, a Fox 19 sports journalist, has reported that “Hamlin has a pulse, but is not breathing on his own”.

Hamlin collided with Bengals receiver Tee Higgins after a completion, got to his feet and then fell backward a second or two later and lay motionless. He was surrounded by stunned players from both teams, and when he was taken off the field 16 minutes later, the Bills gathered in prayer.

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While medical personnel were gathered around Hamlin, his uniform was cut off and he appeared to be getting CPR. He was strapped to a backboard and moved into the ambulance.

The game was suspended 21 minutes after the injury, and players walked off the field slowly.

The 24-year-old Hamlin is in his second year with the Bills. He didn’t see much playing time as a rookie but has been a much bigger part of Buffalo’s defense this season. Entering the game, the 6-foot, 200-pound Hamlin had 91 tackles, including 63 solo tackles, and 1 1/2 sacks.