Qinghai, China; photo by Cory M. Grenier (source: Flickr Creative Commons)

A series of earthquakes – the largest having a magnitude of 6.9 – struck a Tibetan region of western China today, killing at least 400 people according to an AP report.

A further 10,000 were injured as houses collapsed and many remained trapped under fallen buildings – particularly schools – in Qinghai province.

From a Wall Street Journal report:

The quake hit shortly before 8 a.m. local time Wednesday, jolting Yushu prefecture, part of the Chinese province of Qinghai near the edge of the Tibetan plateau. About 97% of the population in Yushu is ethnically Tibetan. Many earn their living raising yaks, sheep and horses.

Additional resources:

BBC News: Hundreds dead after earthquake hits Qinghai province in China