Nepal rescuers race to reach hundreds feared trapped in hydropower tunnels

Workers thought to be stuck in underground areas at 11 sites after last week's devastating flash floods

Rescue teams are working to reach more than 900 missing hydropower workers, hundreds of whom are feared trapped in the tunnels and underground areas of 12 hydropower projects in Nepal after the devastating flash floods, the country's disaster management authority has said.

The death toll from the unprecedented deluge of ice, rock, mud and debris on Wednesday last week has risen to 939 people, with 16 more dead reported in Tibet. More than 4,400 are missing on the two sides of the border.