TVC NEWS [DALIAN, CHINA]- At least four people were killed in a chemical plant explosion in northeast China's Liaoning Province on Saturday evening, local authorities said.

The explosion happened at about 18:40 in Jinzhou District, Dalian City.

According to a witness, the explosion shattered many glass windows in the neighborhood residential area, especially the ones at a student dormitory around the area. A fire was triggered afterward.

"We were at the top floor of our dormitory, (we could see that) whole factory covers a massive land, and it had all been blown up to a flat," said a student who witnessed the explosion.

The cause of the accident is under investigation.