At least two people have died after a 6.8 magnitude earthquake struck northeastern Burma, close to the borders with Thailand and Laos.
The quake was initially put at magnitude 7.0 by the US Geological Survey, before being revised to 6.8. A powerful aftershock was later measured at magnitude 5.4 by the USGS.
The epicentre was just 10km deep and 90km north of Chiang Rai in Thailand. Tremors were felt as far away as Bangkok and the Vietnamese capital Hanoi, where people were evacuated from tall buildings.
An official in Burma, officially known as Myanmar, said one of those killed was a child. 'We received a report that a child was killed in Tachileik town when a building collapsed because of the quake,' said the official, who declined to be named.
Another three people were reported to have been injured in a different part of the town, which was close to the epicentre of the quake.
Just across the border in Thailand, police in Mae Sai district said a 52-year-old woman was killed after a wall of her house collapsed.
Chiang Rai governor Somchai Hatayatanti confirmed the woman's death and said the aftershock felt in the area was 'quite serious'.
He said efforts were made to evacuate people from tall buildings he had ordered all patients from Mae Sai District Hospital to be taken to Chiang Rai.
In central Hanoi - two countries away from the epicentre - the quake was felt as a smooth rocking motion that lasted for several seconds.
No tsunami warning was issued after the quake as US seismologists said it was too far inland to generate a wave in the Indian Ocean.
