Rescuers work around the clock in Nepal

Teams from Nepal, India and China are working round the clock to reach those trapped by Wednesday's flash floods in the Himalayas. Particular emphasis is being placed on reaching those believed trapped in hydropower tunnels. Three bodies have been recovered, but more than nine hundred workers are unaccounted for. Overall, in Nepal, 4,247 people are unaccounted for, with at least 903 known to have died. In Tibet, the official death toll is 16, with 546 reported missing, according to Chinese state media. Presenter Rahul Tandon brings you the latest.

(Photo: An army helicopter carries machinery following flash floods. Credit: REUTERS/Francis Mascarenhas)