STORY: An eyewitness video obtained by Reuters showed an ambulance driving off from the Cincinnati stadium under police escort.
The 24-year-old briefly got to his feet after making a tackle on the Bengals' Tee Higgins with 5:58 remaining in the first quarter but then fell on his back. Medical staff quickly attended to him while players from both teams took a knee in an emotional scene.
The game was halted as medical staff quickly attended to Hamlin. The NFL later announced the game had been postponed.