Bollywood megastar Amitabh Bachchan, who is here to shoot "TE3N", says he felt the tremors that shook India's northeastern region on Monday morning.

An earthquake measuring 6.7-magnitude on the Richter scale rocked northeastern states and adjoining countries like Myanmar, Bangladesh and Bhutan.

"EARTHQUAKE! Felt it around 4.30 a.m. here in Kolkata, bed shook... I wondered... confirmed this morning...May all be safe! PRAYERS," the "Piku" actor posted on Twitter on Monday.

At least six people were killed and more than 50 injured due to the earthquake, according to an official, who added that the death toll is expected to rise.