LANCASTER, Mass. -- Murderer and former football player Aaron Hernandez got mixed up in a prison fight Monday night.
A law enforcement source said Hernandez agreed to be the lookout for another inmate who went into another prisoner's cell at Souza-Baranowski Correctional Center.
That prisoner got into a fight with a third inmate.
Authorities believe the dispute is gang-related.
All three men involved are being disciplined over the incident.