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At least 13 people have been killed after a heated quarrel between a bus driver and passenger resulted in a horror crash in China, police say.
Newly-released surveillance footage shows a female passenger lashing out at the driver and hitting him in the face moments before the tragedy.
She apparently smacks him with her phone, before he retaliates.
Seconds after the dispute, the bus veered onto the wrong side of the road and crashed into an oncoming car.
It then smashed through roadside barriers and flew off a bridge in Chongqing's Wanzhou District last Sunday.