A nine-year-old girl accidentally started a three-wheeler, sending the vehicle crashing into a stall before flipping onto its side, flattening a boy caught underneath it.

CCTV video filmed in Qiandongnan Miao and Dong Autonomous Prefecture in southwestern China's Guizhou Province on May 22 shows the three-wheeler stopped in front of a shop suddenly being started by the girl and rushing down a slope until crashes into a stall, tips over and lands on boy underneath it.

Passersby lift the vehicle up and rescued the boy trapped underneath.

The boy suffered minor injuries and another girl was scratched by the vehicle when it came rushing down the slope.

According to local reports, the driver of the three-wheeler was a deliveryman who had not taken the keys out of the ignition when he parked up to make a delivery.

The girl, who was the shop owner's daughter, climbed into the vehicle and got it going by starting the key.