An explosion in a storehouse for shoe-making materials in Guangzhou on Tuesday killed at least four people and injured 36, the city said on its micro blog.

At least 13 children at a nearby kindergarten were injured by flying glass from windows smashed by the shock wave.

The blast took place at 11:50 am in a storehouse opposite the Ezhangtan archway in Baiyun district, according to a witness named Chen Xiaohong who works in a ventilator shop across the road from the storehouse.