Cooke, along with 11 other ABT members, beat a prospective member for violating their rules of conduct, causing serious bodily injury.
aryan brotherhood of texas
Court documents show that David Harlow and 11 other ABT gang members beat a prospective ABT member at the home of one of the gang leaders.
Eleven of the 12 defendants in the case have pleaded guilty, and 43-year-old gang member David Harlow was found guilty by a judge last March.
Manning faces up to life in prison, and the minimum sentence is 25 years.