Former New England Patriots player Aaron Hernandez has reportedly been involved in a brawl with his fellow prison inmates.

The 25-year-old has been in Souza-Baranowski Correctional Center since being convicted of murder last month in relation to the 2013 shooting of Odin Lloyd.

According to CNN, on Monday, Hernandez acted as lookout for a fellow inmate who approached another prisoner's cell before a fight broke out.

It is believed that all three men have been punished by the prison authorities over the incident, which is said to have been gang related.

Hernandez was reportedly put on suicide watch shortly after he was found guilty of murder in April.