Sikkim, 4/10: Twenty Army personnel are missing in North Sikkim following a flash flood caused by a lake burst in the Chungthang area in North Sikkim.
Due to a sudden cloudburst over Lhonak Lake in North Sikkim, a flash flood occurred in the Teesta River in Lachen valley, defence sources said. The release of water from the Chungthang dam led to a sudden increase in the water level up to 15-20 feet.