Former NFL’er Aaron Hernandez is keeping himself busy during his life sentence by being a lookout for prison fights.

The former New England Patriots tight end was convicted of murder this year, is in trouble after acting as a lookout for a fight among two inmates, CNN reported. CNN, citing a law enforcement source, said the fight was believed to be gang-related.

Hernandez allegedly was a lookout for one inmate while he went into another inmate’s cell, and that’s where the fight happened, CNN said. All three inmates will be disciplined.

Hernandez still has an upcoming trial for a double murder charge related to the killing of two men in a 2012 drive-by shooting in Boston. In April Hernandez was convicted of the 2013 murder of semipro football player Odin Lloyd.

It’s not the first time Hernandez has found himself in trouble since being arrested on Lloyd’s murder. In February of 2014 he was involved in a fight with another inmate while he awaited trial.