When it comes to his various legal challenges, former Patriots right end Aaron Hernandez keeps adding new ones instead of resolving old ones.

According to TMZ, Hernandez is being investigated for allegedly threatening to shoot and kill a guard at the Bristol County Jail. The threat allegedly was made in late 2013.

Hernandez has been imprisoned without bail since June 2013 for allegedly killing Odin Lloyd.

Per the report, investigators have met with another inmate to discuss the allegations. The inmate was reportedly asked whether he heard Hernandez threaten to “kill the guard and shoot his family” once Hernandez is out of jail, or if Hernandez ever made noises similar to the sound of a machine gun at the guard.