At least seven workers were killed and 13 injured following a landslide that sent water and debris gushing into a tunnel under construction in north India, officials said Friday.

The incident occurred late Thursday in the Himalayan state of Uttarakhand, where workers were constructing a tunnel for a state-run hydropower project.

At least three workers are still missing, while 19 were rescued from the Tehri Hydro Development Corporation site, the State Disaster Management Authority said in a statement.

Videos shared by local authorities showed rescue workers equipped with head-mounted torches using makeshift rafts to reach the flooded section of the tunnel.

Uttarakhand has been battered by heavy monsoon rains in recent days.