UPDATE: Monday night’s game has officially been postponed.

The Monday Night Football game between the Cincinnati Bengals and Buffalo Bills was suspended after a frightening injury on the field. The game will not be finished Monday night, the NFL announced.

Bills defensive back Damar Hamlin suffered a frightening injury after a collision with Bengals receiver Tee Higgins. Hamlin initially got to his feet after the play, but collapsed backward after taking a couple of steps.

Medical personnel came to Hamlin’s aid and appeared to administer CPR to the player, according to the Associated Press.

Hamlin remained on the field for 16 minutes before being taken off in an ambulance as players from both teams gathered and prayed. According to FOX19 in Cincinnati’s Joe Danneman, Hamlin was said to have a pulse but could not breathe as he was being transported to the hospital.

After Hamlin was taken off in an ambulance, players began to warm up as if to resume play. However, coaches from both teams met with officials, leading to the game being suspended.

The NFL eventually made an official decision that the game would be postponed and would not resume Monday night.

Material from the Associated Press was used in this report.