The death toll in an explosion at a chemical plant in eastern China has risen to 47, with hundreds of others injured.
Thursday’s blast at the Tianjiayi chemical plant in the city of Yancheng is one of China’s worst industrial accidents in years, and has left 90 people in a serious condition in hospital.
Nearly 1,000 area residents have been moved to safety as a precaution against leaks and additional explosions, the city government said.
The city government statement said 3,500 medical workers at 16 hospitals had been mobilised to treat the injured, dozens of whom remain in critical condition.
The blast created a crater and more than 900 firefighters were deployed to extinguish a fire that burned into the night.
The cause of the explosion remains under investigation.
Chinese president Xi Jinping, on a state visit to Italy, demanded “all-out efforts” to find and rescue victims, the official Xinhua News Agency reported.
China experiences frequent industrial accidents despite orders from the central government to improve safety at factories, power plants and mines.
Among the worst accidents was a massive 2015 explosion at a chemical warehouse in the port city of Tianjin that killed 173 people, most of them firefighters and police officers.
In November, at least 22 people were killed and scores of vehicles destroyed in an explosion outside a chemical plant in the north-eastern city of Zhangjiakou, which will host competitions in the 2022 Winter Olympics.
Thursday’s disaster occurred at a factory run by the Jiangsu Tianjiayi Chemical company. Located among a cluster of chemical factories in Yancheng, it has a dismal safety record.
In February 2018, China’s State Administration for Work Safety cited 13 types of safety hazards at the company, including mishandling of tanks of toxic benzene, the source of Thursday’s explosion.
Those included improperly dealing with hazardous waste and evading air pollution supervision.
A 2017 explosion that killed 10 at a nearby plant prompted China’s national safety regulator, the State Administration of Work Safety, to dispatch inspectors.
They discovered over 200 safety hazards at chemical factories in Yancheng and four nearby cities, including 13 at the Tianjiayi plant.
Safety hazards cited included leaks and drips, employees who did not understand safety procedures, and a lack of emergency shut-off valves on tanks carrying flammable chemicals.
In 2014, the company’s chairman, Zhang Qinyue, and Wu Guozhong, its former supply chief, were arrested on suspicion of dumping and burying hazardous waste by-products near a temple and a village landfill, according to a Jiangsu court criminal judgement.
They were convicted in 2017 and the company was fined 1,000,000 RMB (£113,000).