BANGKOK — A 7.7-magnitude earthquake centered in Myanmar reverberated across Southeast Asia on Friday, with the scale of death and destruction slowly coming into view in the war-ravaged nation, where the military government maintains a tight hold on information.

The earthquake occurred around 1:30 p.m. local time (2:30 a.m. ET) at a depth of 6 miles near Mandalay, the second-largest city in Myanmar, according to the U.S. Geological Survey. It was followed 11 minutes later by a 6.4-magnitude aftershock.

The USGS warned on Friday that “high casualties and extensive damage are probable and the disaster is likely widespread.” According to a predictive analysis based on the strength and depth of the earthquake, USGS estimated that more than 1000 people may have been killed, with a death toll over 10,000 a strong possibility.

Myanmar’s ruling military general, Min Aung Hlaing, said the death toll was at least 140 people, with hundreds more injured, according to Reuters. He added that those numbers are likely to rise.