A tourist bus packed with Iranian nationals plunged into a ravine Sunday while negotiating a mountain road in the central Philippines, killing at least 10 people, a police official said. The bus carrying dozens of mostly Iranian tourists apparently lost its brakes then plummeted into a 100-foot (30-meter) ravine in Balamban town, killing its Filipino driver and a tourist guide and several passengers, police Senior Superintendent Erson Digal said. Villagers and police pulled at least 10 bodies from the mangled bus wreckage at the rocky bottom of the ravine. Several seriously injured passengers were brought to hospitals, Digal told The Associated Press from the crash scene.