A bomb placed at the wall of a military barracks in Beirut exploded early Thursday, shattering windows of several apartments and cars, police and witnesses said. Police said no one was hurt, but one TV station and some witnesses said a soldier was lightly injured by flying glass. The small bomb exploded at about 2 a.m. on a perimeter wall of the Fakhreddine army barracks in the city's Ramlet el-Baida neighborhood, police said. Several hours earlier, a newspaper alerted authorities after its offices received a telephoned threat about an explosion targeting a military installation. The explosion caused cracks in the wall and shattered several windows.