A sudden cloud burst over Lhonak Lake in North Sikkim has led to a flash flood in Teesta River in Sikkim’s Lachen. Some army establishments along the valley have been affected and efforts are on to confirm details. 23 personnel have been reportedly missing after a cloudburst triggered a flash flood in the state. Some vehicles are reportedly submerged under the slush. Search and rescue operations are still underway. A similar flood-like situation is being witnessed in Singtam. CM Prem Singh Tamang rushed to the spot and took stock of the situation in the affected areas.