A passenger bus in China crashed into the wall of a tunnel on Thursday, leaving 36 people dead and 13 injured, according to officials.
The accident occurred at around 11:34 pm when the mini bus ferrying passengers hit a wall of the Qinling tunnel on the expressway.
The bus was travelling to Luoyang city in Henan province from Chengdu city, the capital of Sichuan province in southwest.
Two children were among those killed, and all the injured had been taken to a hospital, the reports said.
Minister of Public Security Guo Shengkun ordered a swift investigation into the accident.
Highway accidents are common in China because of high speeds, aggressive driving and a failure to leave adequate braking distance.
The World Health Organization estimates that traffic accidents kill around 260,000 people in mainland China each year — a rate of 18.8 in every 100,000 people.