Nepal says it is intensifying efforts to free hundreds of people trapped inside tunnels at hydropower projects, including the Trishuli-3A site, following Wednesday's flash floods

Crews - including experts from China and India - have been attempting to make contact but have so far received no response from inside the tunnel, officials say

Hundreds of the 2,550 people reported missing are believed to be employees of Nepal's hydropower sites

Wednesday's disaster has killed at least 794 people and more than 2,500 people are missing in Nepal, local officials say

In Tibet, the official death toll is 16, with 546 reported to be missing, according to Chinese state media - rescuers are struggling to find survivors, our correspondent says