Siliguri, A series of fresh mud-slides, which carried huge boulders on the NH 10 cut off landlocked Sikkim in the Eastern Himalayas and major parts of hilly Kalimpong district of West Bengal, official sources said.

One of the major landslides, which occurred on Sunday evening at Sethijhora near Sevoke blocked the main artery linking Sikkim and Kalimpong to the plains of Siliguri, the nearest railhead of the eastern Himalayan state of the country.

Official sources said the efforts were on to clear the rubble on the highway for the movement of vehicular traffic, carrying essential commodities to the hilly region.

The highway, which was blocked for more than 24 hours from July 30 following a cloudburst and the series of landslides at Mamkhola, near the Rangpo-Kalimpong border killed two migrant labourers and three others went missing off a Sevoke-Rangpo rail project.

Three other casual workers of the project were also wounded.

(Agencies)