Police in Heilongjiang province have identified the image of the person believed to have caused an explosion at a restaurant that injured three officers, two of them with extensive burns.

The blast happened at 9:34 am on Sunday at a Dico's restaurant in Suihua.

Sheng Wei, head of the public security bureau of Suihua, said police received an anonymous phone call claiming that there would be an explosion in the restaurant within minutes.