Seven people were slightly injured as several shipping containers full of fireworks exploded on Wednesday at a port in central-south China's Hunan Province.
A number of containers went off at 1:45 p.m. at the Xia'ninggang harbor in the northern part of Changsha, capital of Hunan.
The explosion injured seven people and rattled windows hundreds of meters away.
The port, known as a river transportation hub in the province, is building up its modern logistic service capacity in addition to the navigation and shipping container businesses.
An investigation into the cause of the blast is underway.