A ninth grader in the northern province of Bac Giang was killed Monday when helping demolish wall to facilitate the construction of more classrooms.

Nguyen Thanh Hung, 15, was killed at around 3p.m. when a nearby pillar fell onto him as bricks were being removed from the wall, Vu Van Tung, vice principal of the Dai Thanh Junior High School in Hiep Hoa District was quoted by local newswire Vietnamnet as saying Thursday.

His class was asked by the school authorities to remove the wall between the school and neighboring Dai Thanh Primary School to make space to build eight classrooms, Tung said.

Trieu Van Cuong, the class teacher, supervised the work. Cuong himself removed bricks from the top of the wall and only let five students to push the wall down when it was around 1.5 meters high and 1 meter long.

But the push was not steady and the wall fell toward them instead. It caused the pillar of the nearby parking lot fall as well.

Hung was killed on the spot under the pillar.

Ngo Van Ngoc and Nguyen Van Khiem were rushed to hospital with injuries to their heads and arms.