A magnitude 7.7 earthquake has struck the Andaman Islands in the Indian Ocean while another has occured in Japan.
The quake in the Indian Ocean struck at a depth of 33 kilometres at about 1:55 am local time and was centered 260 kilometres north of Port Blair in the Andaman Islands, or about 825 miles west of Bangkok, the US Geological Survey said.
A tsunami warning will be in effect for the next one to three hours for parts of India, Sri Lanka, Burma, Indonesia, Thailand and Bangladesh
Meanwhile, a strong earthquake with a preliminary magnitude of 6.6 has jolted eastern and central Japan a government agency said, rattling houses in Tokyo.
The quake, which struck at 8.10pm Irish time prompted a tsunami warning for waves of up to 20 inches for parts of the Pacific coast, the Japan Meteorological Agency said on its web site
A highway was closed and a Chubu Electric Power nuclear power station at Hamaoka shut two units for safety checks.
The focus of the tremor was 20 km deep under Shizuoka prefecture, around 150km southwest of Tokyo, the agency said.