Aaron Hernandez terrorized a Bristol County Jail guard with taunts he planned to "kill and shoot his family," according to TMZ Sports.

The former NFL star is now under investigation over the alleged threats made in 2013, not long after the 24-year-old former NFL star was placed in solitary confinement at the facility on first-degree murder charges in the execution style killing of former associate Odin Lloyd.

Aaron Hernandez charged in jailhouse brawl

The website adds prison officials recently interviewed an ex-inmate once confined near the former New England Patriots tight end to see if her ever overheard Hernandez make any such threats, including taunting the officer with "machine gun round" like noises.

Reportedly, the ex inmate has told investigators he never Hernandez threaten to kill anyone, but recalls him once calling the guard a "bitch" during a big argument between the two.

Aaron Hernandez judge upholds gag order

The news comes just weeks after Hernandez was disciplined by being moved to an even more secluded area of the jail following a jailhouse brawl with another inmate. Several media outlets have reported Hernandez was ultimately charged with assault stemming from the fracas after it was learned the man he fought with was handcuffed at the time of the attack.

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