AGARTALA / SHILLONG, April 5 (TIWN): A moderate earthquake, measuring 5.4 on the Richter scale, rocked the north-eastern states on Tuesday, an official said. The tremor was felt at 1.12 p.m. with its epicentre located in Meghalaya's East Garo Hills district, said an official of the Regional Seismological Centre in Shillong. "We felt the earthquake in the district, but we have no immediate reports of any casualty or damage," East Garo Hills Deputy Commissioner Cyril Diengdoh told IANS. "I have alerted all the BDOs (Block Development Officers) to send me an immediate report," he said. Seven of the north-eastern states -- Assam, Meghalaya, Mizoram, Tripura, Nagaland, Arunachal Pradesh and Manipur -- are considered by seismologists as the sixth major earthquake-prone belt in the world. It's worthy to mention here that the Union home ministry’s disaster management experts have warned of a bigger catastrophe, earthquakes with a magnitude of 8.2 or greater on the Richter scale which may hit the already ruptured Himalayan region. They say quakes with higher intensity than the one that struck Manipur on Monday are likely to rock the region in future. The tectonic shift a series of these recent earthquakes have caused in the region — Manipur 6.7 (Jan 2016), Nepal 7.3 (May 2015) and Sikkim 6.9 (2011) — have re-ruptured the plates that had already developed cracks during previous temblors. This has led to conditions which might trigger multiple earthquakes which may go up to 8.0 in magnitude.