A child and four adults were injured when a police gun accidentally went off at a kindergarten in central China Thursday when the children were staging a show to celebrate the Children's Day on June 1.

The incident took place at 10:00 am at Haiwen Experimental Kindergarten in Zhengdong District in Zhengzhou, capital of Central China's Henan province.

As part of the performance, policemen from Zhengdong District were invited to demonstrate how to use their equipment to raise security awareness for the children. A police gun went off accidentally during the demonstration and a bullet hit the cement ground. The pieces of cement slightly injured four parents and one child.

The injured have been sent to the hospital.

International Children's Day falls on June 1 every year.