At least 36 workers were trapped after a segment of an under-construction tunnel on the Brahmakhal-Yamunotri national highway in Uttarakhand collapsed in the early hours of Sunday.
The incident took place at around 4 am between Silkyara and Dandalgaon villages in the state’s Uttarkashi district.
No casualties have been reported so far.
The National Disaster Response Force, the State Disaster Response Force, the police, and the fire brigade are conducting rescue operations.
The collapsed portion is located about 200 metres from the entrance of the tunnel, Uttarkashi Superintendent of Police (SP) Arpan Yaduvanshi said to PTI news agency.
He said an oxygen pipe had been inserted into the collapsed part of the tunnel so that those trapped would not have difficulty breathing. Food items are also being sent in and the workers will be rescued soon, Yaduvanshi said.
