HÀ NỘI — Hà Nội's Cầu Giấy District police accused 29-year-old teacher, Nguyễn Thị Thủy, of ‘lack of responsibility causing serious consequences’.

Thủy was the head teacher of private school Gateway, where a first-grader died two months ago.

According to police, Thủy was yet to be arrested.

With the decision on Tuesday, three people are now under investigation for their involvement in the death of the school boy on August 6.

The six-year-old child was forgotten about and trapped for nine hours on his 16-seat school bus which was parked outdoors on a hot summer day. His body was found in the afternoon when the doors of the bus were opened to pick up the students and drive them home.

An autopsy determined the cause of death was heatstroke and respiratory failure.

The 54-year-old monitor Nguyễn Bích Quy of the school bus in question and 53-year-old driver Doãn Quý Phiến have been charged with manslaughter.

Quy was taken into custody for three months while Phiến was released on bail but placed under house arrest.

If found guilty, Thủy, Quy and Phiến might each face a jail sentence of between six months and five years. — VNS