Chamoli, Aug. 13 -- Four bodies have been recovered from an under-construction tunnel of the Tehri Hydro Development Corporation Limited (THDC) at Pipalkoti in Chamoli, where several workers were trapped after water and debris entered the tunnel, officials said on Thursday.

Rescue operations by NDRF and SDRF teams are underway to evacuate the remaining workers trapped inside the tunnel. Officials said 18 workers have been rescued so far and shifted to the district hospital for treatment.

NDRF team commander Amrit Lal Meena said a large volume of water had entered the tunnel when the rescue team reached the site, with water also seeping in from the sides.

"After our team arrived and started the operation, there was a massive volume of w...