ZHENGZHOU, March 4 -- The roof of a kindergarten in central China's Henan Province collapsed early on Tuesday morning, killing one child and injuring three others, local authorities said.

The collapse occurred around 1 a.m. in Tuodian Village, Shihe District of the city of Xinyang, burying 13 children at the boarding kindergarten.

One child died on the way to hospital while three others who suffered minor injuries are still being treated in a local hospital, according to sources with the city government.

Initial investigation showed that the collapse was caused by the owner of the kindergarten, surnamed Yu, who dismantled the wall between two rooms on Feb. 28, affecting the stability of the building, said the district's publicity department.

The kindergarten is unlicensed, it added.

Yu suffered a sudden heart attack in the wake of the accident and is being treated in a hospital under police surveillance, the department said.

Further investigation is under way.