The death toll in a fire accident at the ArcelorMittal-operated Kostenko coal mine in central Kazakhstan has risen to 32, with another 23 miners remaining underground, the operator ArcelorMittal Temirtau said.

Earlier reports said 20 people had been killed in the fire.

"Of 252 miners, 208 have been taken out, of which 18 people sought medical assistance. As many as 23 miners remain underground. The bodies of 32 miners have been found. The rescue effort is ongoing," the operator said in a statement.

Kazakh President Kassym-Jomart Tokayev ordered the cabinet to halt investment cooperation with ArcelorMittal Temirtau, the republic’s largest miner, in the wake of the accident.