India, Aug. 14 -- Seven workers died when water gushed inside a tunnel under construction at a hydroelectric project site in Chamoli district, officials said on Friday.

Search for three missing persons is currently underway, they said.

The incident occurred in a tunnel at Mayapur (Pipalkoti), when landslides and subsidence caused debris and water to fill half of the tunnel, trapping workers inside.

District Disaster Management Officer N K Joshi said 22 people were inside the tunnel at the time of the incident on Thursday.

Of them, 19 were rescued overnight, seven died, and a search for the three missing is on, he said.

According to a statement, the deceased were identified as Pradeep Singh Pawar of Tehri, Mukesh of Chamoli, Durlabh S...