The region had previously experienced one of the worst earthquakes in 1897 , measuring 8.1 on the Richter scale , that claimed the lives of over 1,500 people . Again in September 2011 , more than 50 people died after a killer quake measuring 6.9 had shook the region
killer quake measuring 6.9
2011 Sikkim earthquake
November 2011 Myanmar earthquake