Guwahati, Sept. 6 -- A major landslide struck the Naga-Tosa Road in North Sikkim's Naga Forest area on the night of September 5 and 6, partially blocking the Teesta and Chyakoong rivers and prompting authorities to intensify surveillance along the river belt.

According to the District Administrative Centre, Mangan, authorities were alerted to the incident by the district police and Chungthang Sub-Division Police. A large section of hillside along a new road cutting on the Naga-Tosa Road, opposite the Theng Tunnel and close to the confluence of the Teesta and Chyakoong rivers, reportedly collapsed.

The landslide temporarily disrupted the flow of both rivers, with the Teesta partially blocked following the collapse. The river has since re...