Al-Tahwir Al-Jihad, the biggest Al Qaeda group based in the Gaza Strip, murdered Italian peace activist Vittorio Arrigoni Thursday, April 14, shortly after they kidnapped him - although Hamas was given until 5 p.m. Friday to release its leader in exchange for their Italian victim. Arrigoni arrived on an anti-blockade ship three years ago and carried out overseas commissions for Hamas. His captors, suspecting him of spying for the West, may have tortured him to death.