New York’s attorney general has appointed a special prosecutor in the death of a man who was beaten by state corrections officers.

Body camera footage of the Dec. 9 assault on Robert Brooks was made public Friday by the state’s attorney general, who is investigating the officers' use of force. Brooks, 43, was pronounced dead at a hospital the morning after the assault at the Marcy Correctional Facility,

The Federal Bureau of Investigations and the United States Department of Justice are now investigating the death of Robert Brooks, an inmate at a prison in Upstate New York who died following a brutal attack by corrections officers earlier this month.