A massive earthquake struck central China on Monday, killing more than 7,600 people and trapping nearly 900 students under the rubble of their school, state media reported.

The official Xinhua News Agency said 80 per cent of the buildings had collapsed in Beichuan county in Sichuan province after the 7.8-magnitude quake, raising fears the overall death toll could increase sharply.

Xinhua cited the Sichuan provincial government as saying 7,651 people died, but the situation in at least two counties remains unclear.