SHIJIAZHUANG - One person died and six others injured when a three-story supermarket caught fire early Monday morning in North China's Hebei province, local firefighters said.

Seven workers were in the Zhongxing Supermarket in downtown area when the fire started around 6 am, said firefighters from the city of Tangshan.

No customers were injured in the fire, as it started before the supermarket opened for the day.

Firefighters extinguished the fire by 12:30 pm.

All six of the injured have been taken to a local hospital. Two of them are still receiving emergency treatment.

The cause of the fire is under investigation.