A 6.0 magnitude quake hit western Indonesia's Bengkulu province Saturday, but there were no immediate reports of any casualties or damage. The quake struck at 4:21 pm (0921 GMT) with an epicentre 72 kilometres (45 miles) southwest of the town of Bintuhan, off the coast of Sumatra Island, the Jakarta Meteorology and Geophysics Agency said. It struck at a depth of 28 kilometres but no tsunami warning was issued. Indonesia sits on the Pacific "Ring of Fire," where the meeting of continental plates causes high volcanic and seismic activity.