Nearly 400 tourists, including 13 from Bangladesh, were rescued by the Indian Air Force (IAF) and Army from the Lachen and Lachung towns in North Sikkim on Monday, officials said.
The MI-17 and Chinook helicopters of the IAF conducted 10 sorties, moving 354 tourists out of the disaster-hit areas, they said.
These tourists were brought to Pakyong airport, they added.
The Army shifted 45 tourists from Lachen to Mangan on helicopters, officials said.
These tourists were stranded in Lachen and Lachung after a cloudburst over Lhonak Lake in Mangan district on Wednesday caused a flash flood in Teesta river, devastating several towns and villages across the Himalayan state, they said.
The operation to rescue tourists stranded in the affected areas will resume again on Tuesday, officials said.
