Aaron Hernandez Sports New Jailhouse Neck Tattoo

BOSTON -- Former NFL standout Aaron Hernandez is commemorating his life sentence with a new neck tattoo that reads "Lifetime" and another on his hand that prison officials confirmed is gang-related.

Hernandez, 25, who is serving a life sentence after he was convicted in the 2013 killing of his friend Odin Lloyd last month, faced a judge again today in connection with a separate double slaying he is accused of committing in July 2012. Hernandez is accused of intimidating a witness to that drive-by execution-style slaying.

During his Boston court appearance today, Hernandez was photographed with the new ink, which several sources said was one of two tattoos he got from jailhouse artists at MCI-Shirley's Souza Baranowski Correction Center. The tattoos were spotted after a "two-on-one fight" involving Hernandez that the sources called gang related.

The fight landed Hernandez in a segregated cell at the prison's Special Management Unit, authorities said.

Hernandez was arraigned today on witness intimidation charges connected to the allegation that he shot a former bodyguard, Alexander Bradley, in the head after a night out in Florida and rolled him out of a moving car in an industrial park.

Bradley later told a grand jury that Hernandez shot him to keep him quiet about the July 2012 shooting, sparked when the then Patriots tight end was angry about a spilled drink on the dance floor at a Boston nightclub and he retaliated by waiting for the men to leave the club. He then ambushed them at a red light and opened fire, Suffolk County prosecutors said.