GUANTANAMO BAY (AFP) - Self-declared 9/11 mastermind Khalid Sheikh Mohammed wore a military-style camouflage vest as he made his first appearance at a pre-trial hearing here Wednesday. The issue of what KSM and four alleged co-conspirators will wear when they eventually go on trial before a military tribunal at US base in Cuba was one of several up for debate at this week’s hearings. Sheikh Mohammed considers himself a prisoner of war and wants to wear the same uniform he wore while fighting for the US-supported fighters in Afghanistan and Bosnia, his defense lawyer said. The prosecution has dubbed the defendants “unlawful combatants”, and sought to deny them the right to military-style clothing on security grounds, but the military judge, Col James Pohl, dismissed this concern. Mohammed and the other defendants also have the right to stay in their cells and not attend the hearings. KSM had planned to attend, then asked to be taken back to his cell, then changed his mind again and appeared at the hearing, the judge said. In the end, he showed up during a break in the proceedings and wore a military-style vest over a white tunic. He wore a white turban on his head. The hearings are to prepare for a 9/11 trial at some point next year. KSM is accused of orchestrating the hijacked airliner plot that left 2,976 people dead, while his alleged Qaeda accomplices are charged with providing funding and other support for those who crashed the planes.