The party's criticism comes as a massive landslide on Tuesday morning caused significant damage to the Teesta Stage V hydroelectric project, a 510 MW facility on the Teesta River in East Sikkim.

This revelation follows a scientific expedition by the Department of Science and Technology (DST), Government of Sikkim, to the East Rathong Glacier in West Sikkim.

Frequent flooding of the Brahmaputra River poses significant challenges for Assam and the northeastern region, causing casualties and extensive land inundation annually.

Between Wednesday and Thursday morning, Mangan district in North Sikkim experienced 220mm of rain, leading to multiple landslides that claimed at least six lives in Pakshep and Ambhithang areas, with power and communication lines disrupted.

Authorities, including Block Development Officers (BDOs), Municipal Executive Officers (MEOs), and Station House Officers (SHOs), have been put on high alert to monitor the rising water levels closely.