A car bomb exploded Monday near a military bus carrying troops on their way to work in northern Lebanon, killing at least five people and injuring 25, Lebanese security officials said. The officials said most of the casualties were soldiers. A senior military official told The Associated Press that three soldiers were among the dead and the security officials said 22 of the injured in six area hospitals were soldiers. They said the explosives-laden car was parked on the side of the road and was detonated by remote control as the bus drove in the Bahsas neighborhood on the southern entrance to the northern port city of Tripoli. They said the explosives used were mixed with metal balls to maximize casualties.