The death toll from an explosion which ripped through a barbecue restaurant in Yinchuan, capital of Ningxia Hui Autonomous Region, on Wednesday night, has risen to 31, local authorities said on Thursday.

The blast happened at around 8:40 p.m. on a busy street in Xingqing District of Yinchuan, due to a leakage of liquefied petroleum gas from the operating area of a barbecue restaurant.

Chinese President Xi Jinping has ordered all-out efforts to treat those injured in the explosion.