The residents stayed outdoors in panic for more than an hour in the places inculding Koyambedu, Santhome, Thiruvanmiyur, Chintadripet, Choolaimedu, Royapettah and Aminjikarai.
Earth quake hit at a depth of about 157 kilometres west-southwest of Misha in Nicobar Islands and 445 kilometres northwest of Banda Aceh in Indonesia.
Meteorological officials have warned a tsunami watch for India and the nearby islands. The Pacific Tsunami Warning cautioned that a 'destructive widespread tsunami threat' did not exist, but rather there was a possibility of a “local tsunami" that could affect coasts located about 100 kilometres from the epicentre.
Several parts of Sri Lanka also experienced tremors following the earthquake, informed D Wijayananda, the head of the country"s Geology and Mines Bureau. The tremor occured in Sri Lanka's western and southern coastal areas lasted less than two minutes.