At least nine people were killed and nearly 200 injured in Monday's earthquake, with efforts to rescue those trapped in rubble hampered by severed power supplies and telecommunication links.
The quake struck while many residents were asleep, and roofs and staircases of some buildings collapsed in Imphal, a city of about 270,000 people.
People in Bangladesh and the Himalayan nation of Nepal ran from their homes, and the quake was also felt as far away as the Myanmar city of Yangon, about 1,176 km to the south, residents said.
At the airport, flights were normal, although a boundary wall collapsed, and a crack appeared in the terminal building.
Some people criticised what they called the authorities' slow response, saying that although the army had begun to clear debris, it appeared to be short of heavy equipment.
Media in Bangladesh reported three people died of heart attacks with police saying at least 90 were injured.
An official at Myanmar's meteorological department in Naypyitaw, the capital, said there were no reports of damage or casualties on the Myanmar side of the border.