The Sangamon County Sheriff’s office has released audio and video of the alleged head-butting incident that has led to criminal charges against a Riverton cop.

Officer Grant Peterson is accused of aggravated battery and official misconduct for allegedly grabbing a handcuffed suspect by the neck and head-butting him. The sheriff’s office investigated the incident and has now released surveillance video from inside the Riverton police department that appears to show the incident along with body mike audio from another officer who was in the room at that time but was facing away at that moment. That audio cuts out several seconds after the head-butting, but Sheriff Jack Campbell says the investigation has not established why that happened.

Riverton’s police chief says Peterson is on unpaid leave but won’t discuss the status of the other officer.