A roadside bomb struck a Syrian military truck Wednesday, wounding six soldiers just seconds after a convoy carrying the head of the U.N. observer mission passed by. An Associated Press reporter who was traveling in the U.N. convoy said the explosion blew out the military truck's windows and caused a plume of thick, black smoke. The U.N. convoy was not hit. At least three bloodied soldiers were rushed away. The blast went off after the head of the U.N. observer mission, Maj. Gen. Robert Mood, headed into this southern Syrian city with a team of observers and a convoy of journalists. The explosion was more than 100 meters (330 feet) behind the convoy.