The death toll in a 31-vehicle pile-up on an expressway in northwest China's Gansu Province on Saturday evening has risen to 15 with 44 injured as of Sunday morning, local authorities said.
It is understood 10 of the 44 people injured were in a serious condition, the Xinhua news agency reported.
However, according to China's Xinhua news, the lorry driver told authorities his brakes failed as he travelled down a hill towards the toll station.
The day before this tragedy, seven people lost their lives in a traffic accident caused by an out-of-control heavy-duty truck crossing into the opposite lane and hitting oncoming traffic in Yingjing county, Sichuan province.
14 killed, 34 injured in vehicle pileup in northwest China.
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According to media reports, "Another 44 people were injured in the pile-up at the toll station which is close to Lanzhou, capital of Gansu".
Police detained the bus driver and were investigating the case.
Last week, 15 people died when a bus to plunged off a bridge into China's Yangtze River in the city of Chongqing.
Video from an on-board camera showed a woman attacking the driver after he missed her stop, causing him to lose control of the vehicle.