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Nine News: Professor John McCloskey, Ulster University, speaks about the risk of tsunamis from underwater earthquakes
A major earthquake measuring 7.2 on the Richter scale has struck an area near the Nicobar Islands off India's eastern coast.
According to Japanese experts, the quake took place 6.2 miles below the surface of the sea.
There have been no immediate reports of casualties and an earlier tsunami alert has been cancelled.
In the capital Port Blair, hundreds of people were reported to have ran out of their homes in panic and rushed to open places.
There are over 550 islands in the remote Indian Ocean archipelago that was devastated by last year's tsunami.
