Magnitude-7.7 earthquake rocks eastern Indonesia

A magnitude-7.7 earthquake rocked eastern Indonesia early Saturday, the US Geological Survey said. The quake struck at 0158 Saturday, local time, in the Banda Sea, about 195 kilometers south of Ambon city, the USGC said on its Web site. There were no immediate reports of damage or injuries. Indonesia, the world's largest archipelago, is prone to seismic upheaval because of its location atop a volcanically active region known as the Pacific "Ring of Fire."