A major earthquake of magnitude 7.6 struck in the Indian Ocean off India's Andaman Islands early on Tuesday, but a tsunami alert for India, Myanmar, Indonesia, Thailand and Bangladesh was later canceled. There were no reports of a tsunami or of any casualties from the tremor, officials said. It coincided with a 6.5 magnitude earthquake that jolted Tokyo and surrounding areas of Japan. There were no reports of major casualties from that quake either. The small chain of islands lie hundreds of miles east of India in the Indian Ocean. The U.S. Geological Survey said the quake, initially reported as a magnitude 7.7, struck at 1:55 a.m. (3:55 p.m. EDT on Monday). It was relatively shallow, at a depth of 33 km (20.6 miles), and was centered 260 km (160 miles) north of Port Blair. The U.S. National Oceanic and Atmospheric Administration's Pacific Tsunami Warning Center said there could be a destructive wave along coasts up to 1,000 km (600 miles) from the epicenter, but it later withdrew its warning. Officials at the tsunami alert center in southern India said there was no chance of a tsunami.