Officials say a strong earthquake measuring magnitude 6.2 has struck off the coast of western Indonesia but there is no danger of a tsunami, AP reported. The U.S. Geological Survey says Sunday's quake was centered about 400 miles (650 kilometers) southwest of Banda Aceh, the capital of Aceh province, at a depth of 9 miles (15 kilometers). Indonesian meteorological official Suharjono says there is no threat of a tsunami. There were no immediate reports of injuries or damage. Two powerful quakes measuring magnitude 8.6 and 8.2 triggered a tsunami watch on Wednesday in more than two dozen nations and island territories, from Australia and India to as far off as Africa.