A member of the Aryan Brotherhood is facing an extended prison sentence after admitting he committed a federal hate crime by severely beating another inmate he believed to be gay.
The FBI says 27-year-old John Hall was sentenced Thursday to nearly six years, which will be added to the sentence he's currently serving in federal prison in suburban Dallas.
He had been scheduled for release in August.
Authorities said Hall yelled homophobic slurs as he attacked the inmate in December 2011 by repeatedly punching and stomping on his head. The victim suffered a fractured eye socket, broken teeth and multiple lacerations.
Hall pleaded guilty in November 2012 to violating the Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act.
It wasn't immediately clear why Hall was originally incarcerated.