SHANGHAI, March 22 -- An explosion at a pesticide plant in eastern China’s Jiangsu province has killed 44 people and injured more than 600, state media said on Friday, the latest casualties in a series of industrial accidents that has angered the public.

The blast occurred on Thursday at the Chenjiagang Industrial Park in the city of Yancheng, and the fire was finally brought under control at 3.00 a.m. on Friday (1900 GMT), state television said.

Survivors were taken to 16 hospitals with 640 people being treated for injuries. Thirty-two of them were critically injured, it said.

The fire at a plant owned by the Tianjiayi Chemical Company spread to neighbouring factories. Children at a kindergarten in the vicinity were also injured in the blast, media reported.

The exact cause of the blast was under investigation, but the company - which produces more than 30 organic chemical compounds, some of which are highly flammable - has been cited and fined for work safety violations in the past, the China Daily said.

Public anger over safety standards has grown in China over industrial accidents ranging from mining disasters to factory fires that have marred three decades of swift economic growth.

In 2015, 165 people were killed in a series of explosions at a chemical warehouse in the northern city of Tianjin.

The explosions at Tianjin, one of the world’s busiest ports and not far from the capital, Beijing, were big enough to be seen by satellites and register on earthquake sensors.

Despite repeated pledges by the government to tighten safety, chemical plants in particular have been plagued by disasters.

In November, a series of blasts during the delivery of a flammable gas at a chemical manufacturer killed 23 people.