JAKARTA:  A strong earthquake has struck off the coast of eastern Indonesia, but officials say there is no threat of a tsunami. The US Geological Survey said the magnitude-6.9 quake hit Wednesday afternoon 106 kilometers (66 miles) southeast of Amahai, a town on Seram, the biggest island in Maluku province. It said the quake was centered in the Banda Sea at a depth of 33.9 kilometers (21 miles). Indonesia's Meteorology, Geophysics and Climatology Agency said there was no danger of a tsunami. Indonesia is prone to earthquakes due to its location on the Pacific 'Ring of Fire,' an arc of volcanoes and fault lines in the Pacific Basin. In December 2004, a massive earthquake off Sumatra island triggered a tsunami that killed 230,000 people in a dozen countries.