A powerful undersea earthquake rattled western Indonesia on Wednesday, AP quoted geological agencies as saying, but there were no immediate reports of injuries or damage. The 6.4-magnitude quake was centered 130 kilometers (80 miles) southwest of Padang, a town on Sumatra island still recovering from a series of strong tremors that killed nearly two dozen people earlier this month, the U.S. Geological Survey reported. It struck nearly 35 kilometers (21 miles) beneath the ocean floor just before midnight, a local agency said. Indonesia, the world's largest archipelago, is prone to seismic upheaval due to its location on the so-called Pacific «Ring of Fire,» an arc of volcanos and fault lines encircling the Pacific Basin. A massive earthquake and subsequent tsunami on Dec. 26, 2004, killed more than 131,000 people in Indonesia's Aceh province and left half a million homeless.
