Aizawl/Kohima:Moderate to mild four separate quakes with magnitude ranging from 2.8 to 4.5 on the Richter scale hit several parts of Mizoram, Nagaland, Tripura, Assam and adjoining areas of northeast region bordering Myanmar on Thursday.
According to the officials, there was no report of any damage or casualty from any part of the northeastern region.
With Thursday's two separate quakes, mountainous Mizoram was hit by the frequent tremors during the past one week.
An official of the India Meteorological Department (IMD) said, Thursday's two moderate earthquakes occurred within an hour with magnitudes of 4.2 and 4.5 on the Richter scale that jolted eastern Mizoram's Champhai area and other adjoining northeastern states.
The IMD official said that the first tremor occurred at Wednesday-Thursday midnight (12.45 a.m.) and the second one happened at 1.14 a.m. on early Thursday. Champhai district officials said that residents had a sleepless night during the last few days following the tremors with various magnitudes and subsequent aftershocks.
A fact-finding team comprising geologists and seismologists is now visiting Champhai to study the multiple aspects of the tremors.