It was a shocking and dramatic moment when a young boy rollerblading in a park with his family was suddenly catapulted into the air by the force of a blast.
The cause: a firecracker tossed into a manhole.
The horrific moment was caught on CCTV in a park in China. In the footage the boy can be seen skating up to a man and two younger children, before bending down. He is then suddenly catapulted into the air, spinning 360 degrees, as the force of the underground blast rips the manhole cover off. He was taken to hospital but declared fine apart from a few scratches.
Experts said that methane released from sewage was combusted by the firecracker, causing the explosion.