India, March 28 -- India on Friday expressed concern over the 7.7-magnitude earthquake that struck parts of Myanmar and Thailand and put its authorities on standby for an emergency response.

The quake killed at least 20 people in Myanmar, and three in Thailand, according to initial reports. The powerful temblor, with its epicentre in Myanmar, shook a vast expanse of Southeast Asia, causing damage as far away as Bangkok and being felt in parts of India's northeastern region.

"Concerned by the situation in the wake of the earthquake in Myanmar and Thailand. Praying for the safety and well-being of everyone," Prime Minister Narendra Modi said in a social media post.

"India stands ready to offer all possible assistance. In this regard, ask...