A huge 7.7 magnitude earthquake has hit central Myanmar, according to the United States Geological Survey (USGS).
The epicentre was 16km (10 miles) north-west of the city of Sagaing, at a depth of 10km, sending strong tremors that were felt as far as south-west China and Thailand.
At least 70 construction workers are missing after an unfinished high-rise building collapsed hundreds of miles away in Bangkok.
A rescuer in Mandalay, Myanmar’s second-largest city, told the BBC the damage is “enormous”, and the number of casualties is “at least in the hundreds”.
There have been reports of roads buckling in the capital of Naypyidaw, and the country’s military government has declared a state of emergency in six regions.
The earthquake struck near Mandalay, which has a population of about 1.5 million people.
A second quake struck 12 minutes after the first, according to the USGS, with a magnitude of 6.4 and its epicentre was 18km (11.1 miles) south of Sagaing.
Soe Lwin, in Myanmar’s largest city, Yangon, said he felt the first earthquake for a “long time” and added that residents are worried about the potential for more aftershocks.
