+GRAPHIC VIDEO+
A coach transporting 33 middle school teachers flipped over on a motorway in China, killing three.
The video, captured in Qingyuan City in southern Guangdong Province on June 23, shows the out-of-control packed coach sliding along the road and tipping over at the entrance of a tunnel.
Teachers in the coach can be seen being flung from the side windows and crushed underneath the vehicle.
Nearby people run to rescue the injured passengers.
Three people were killed and nine were injured, reports said.
The cause was being investigated.
