Authorities in southwest China's Sichuan Province have said that 20 people have been killed in the magnitude-7.0 earthquake which struck Jiuzhaigou County on Tuesday evening.

At least 430 people have been injured in the disaster, with 15 said to be in a critical condition.

More than 60,000 tourists and local residents have also been moved to safety.

Four patients with severe fractures have been sent to a hospital in Mianyang, while a further 13 people were transferred to major hospitals in the provincial capital, Chengdu.

Meanwhile, nine national medical experts have been sent to Sichuan Province to assist local teams.