BEIJING (AP) — China’s state-run news agency says at least 31 people have been killed and more than 90 wounded in an early morning attack on a busy street market in the capital of the country’s volatile northwestern region of Xinjiang (shihn-jahng).

The official Xinhua (shihn-wah) News Agency says the assailants plowed through crowds of shoppers in off-road vehicles and threw explosives out the window before crashing head-on. One vehicle exploded in the crash.

A person at the scene tells Xinhua there were up to a dozen blasts in all.

It’s not immediately clear who’s responsible for the attack, but recent violence in the region has been blamed on radical separatist Muslims.

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