Initial reports suggest that the epicentre of the earthquake was in Manipur, around 10-12 kms southwest of Kakching district of the state.
"An earthquake with a magnitude of 5.5 on the Richter Scale hit 15 km West of Moirang in Manipur at 20:12 hours today," National Center for Seismology said.
There were no immediate reports of collateral damage, injuries or loss of lives.
(This is a developing story. Further details are awaited)