Idaho State football Coach Mike Kramer is being investigated by police and the university for allegedly shoving a player to the ground two weeks ago in an incident caught on video.
The university and the Pocatello Police Department on Wednesday separately confirmed investigations. ESPN first reported the incident.
Senior wide receiver Derek Graves lodged a complaint with police on Sunday that he was pushed by Kramer during an Oct. 3 practice.
Don Jackson, Graves' attorney in Montgomery, Ala., said Graves has suffered from neck and back spasms since the incident.
In the video, which was obtained by ESPN, Kramer runs toward a player on the field, puts his face close to his helmet, and then shoves him with two hands. The player falls backward to the turf, after which Kramer steps over him.
Graves used a separate recording device to make a copy of the video that he passed on to law enforcement officials, Jackson said. The attorney said his office was contacted by Graves' family after they grew concerned about their son's safety.