Duane “Keefe D” Davis, a suspect in the 1996 murder of Hip-Hop icon Tupac Shakur, has been hit with an additional charge stemming from a jailhouse fight with another inmate.

Keefe D was involved in a violent brawl while awaiting trial for Tupac Shakur’s murder, leading to additional charges.

The big thing working against Davis is that he went on record in several interviews confessing to being involved in Pac’s murder. In 2008, he allegedly confessed to the murder as a part of a “proffer agreement,” meaning that anything he told investigators at the time could not be used against him in court.