Senior Hamas comander Ahbed al Salem abu Moussa, 30 was killed Sunday morning in an explosion in his home in the Khan Yunis refugee camp in the southern Gaza Strip. Abu Moussa was a member of the Hamas' militant wing Al Zadin el Kassam. Palestinian sources believe the explosion was a "work-related accident." Sources believe he was trying to launch a mortar attack, when the shell exploded in his hands. The Hamas web site described the event as a Jihad mission, and claim another man was wounded in the attack.