Updated

There was a scary moment after a tackle on Thursday night in Cleveland.

Late in the second quarter, Browns' Elijah Moore was tackled from behind on a routine play, but he went to the ground awkwardly.

The receiver fell helmet first onto the playing surface and then turned onto his back.

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Elijah Moore

Elijah Moore (#8) celebrates a catch against the New York Jets at Cleveland Browns Stadium on Dec. 28 in Cleveland, Ohio.  (Gregory Shamus/Getty Images)

While he was on the ground, Moore's head shook back and forth, which seemed like him shaking off the hit at first, but then his arms began flailing.

Though his arms were not moving violently, it did look as if Moore had no control over them, prompting a teammate to call for the training staff.

The Amazon Prime Video broadcast was quick to change camera angles.

Trainers were quickly at Moore's side and he eventually walked off the field with some help. He did not return to the game after the Browns said he suffered a concussion.

Dr. Evan Jeffries, who is on X, formerly Twitter, as the "@GameInjuryDoc," said Moore's movements were "involuntary…from a brain injury."

Another doctor, Jesse Morse, said Moore may have suffered a seizure.

Elijah Moore and Joe Flacco celebrating

Joe Flacco (#15) and Elijah Moore (#8) celebrate a touchdown in the first half against the New York Jets at Cleveland Browns Stadium on Dec. 28 in Cleveland, Ohio. (Gregory Shamus/Getty Images)

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Moore had five receptions for 61 yards and a touchdown against his former New York Jets before the injury.

The Browns were already without Amari Cooper, who had 265 receiving yards last week, due to a heel injury.

Elijah Moore tackled

Cleveland Browns wide receiver Elijah Moore (#8) is tackled by New York Jets linebacker C.J. Mosley (#57) during the first half at Cleveland Browns Stadium.  (Ken Blaze-USA TODAY Sports)

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The Browns had not provided a further update on Moore's concussion at the time of publishing.

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