At least three people are killed in a powerful earthquake that shook Thailand and Myanmar, with many more thought to be dead.

On Friday, a strong earthquake shook neighboring Thailand and Myanmar, destroying a bridge, a dam, and buildings. In Myanmar, where images and videos from two severely damaged cities revealed significant devastation, at least three people were murdered when a high-rise under construction fell in the Thai capital, and many more were thought to be dead.

A powerful 6.4 magnitude aftershock followed the 7.7 magnitude earthquake that occurred at lunchtime, with its epicenter close to Mandalay, Myanmar's second-largest city.

It was not immediately apparent how many people had died, been injured, or been destroyed, especially in Myanmar, one of the poorest nations in the world. Information is strictly regulated, and it is involved in a civil war.

Images from Naypyidaw's capital showed rescue workers removing casualties from the debris and several buildings that housed civil servants that had been demolished by the earthquake.

According to Myanmar's authorities, the most affected areas have a significant demand for blood. Images of damaged highways, bowed and cracked roads in Mandalay, and the collapse of a bridge and dam sparked more worries about how rescuers would ever get to some locations in a nation already experiencing a severe humanitarian crisis.