criminal law:

In the morning, Silverstein, while being escorted from the shower to his cell, stopped next to Randy Gometz's cell, and while two of the escorting officers were for some reason at a distance from him, reached his handcuffed hands into the cell. The third officer, who was closer to him, heard the click of the handcuffs being released and saw Gometz raise his shirt to reveal a home-made knife ("shank")which had been fashioned from the iron leg of a bedprotruding from his waistband. Silverstein drew the knife and attacked one of the guards, Clutts, stabbing him 29 times and killing him.

Did Gometz aid and abet the killing of a prison guard?