Official sources said today the landslide occured at 11 p m last night between Rangpo on Sikkim border and Melli in West Bengal.
Border Road Organisation is working since last night to clear the debris. It has assured that one-way traffic on the highway will be opened by evening today.
Some traffic to and from the landlocked mountain state is being diverted to the difficult alternative route via Monsong in Kalimpong in Darjeeling district.
The landslide followed heavy rains in north Bengal and Sikkim since the past couple of weeks.
