A tsunami watch has been issued across the Indian Ocean after a magnitude 7.6 earthquake, while a second tremor caused buildings to shake in Japan.
The Pacific Tsunami Warning Centre put India, Burma, Indonesia, Thailand and Bangladesh on alert for a tsunami following the first quake off the Andaman Islands
It was 20.6 miles (33km) deep and was centred 163 miles (262km) north of Port Blair in the islands, which belong to India, the US Geological Survey reported.
Around 22 minutes later, a second earthquake, measuring 6.4 on the Richter scale, jolted eastern and central Japan.
It prompted a tsunami warning for waves of up to 50cm (20 inches) for parts of the Pacific coast, the country's meteorological agency said.
Houses in the capital Tokyo were rattled by the quake, while a nuclear power station in Hamaoka has closed two units for safety checks.
The epicentre of the earthquake was around 12 miles (20km) deep and 106 miles (170km) southwest of Tokyo.
SkyNews
