Thousands of people have fled to higher ground in a quake-hit Chinese county amid fears a lake could burst its banks. An alert was issued in Beichuan, where officials had already voiced concern about the stability of dams and reservoirs. The lake said to be posing an imminent threat is thought to have been created by debris blocking waterways.
More survivors from the 7.9 magnitude quake have been found today, including a German tourist who had been buried for almost 120 hours. China has put the official death toll at close to 30,000 but says it expects that to rise to more than 50,000.
Russian aid is among the latest to arrive, with experts confident it is not too late to save people still trapped. China has been praised for its quick response to the earthquake, but there is increasing concern that hot weather will result in serious illness among survivors.