At least seven workers have been hospitalised and three are said to be critical as a paper mill in Chhattisgarh reported a gas leak.
As per reports, the incident occurred while the workers were cleaning a tank at the mill.
The seven workers have been hospitalised and are undergoing treatment.
The three critical patients have been shifted to capital Raipur for treatment.
The mill was shut for the past several weeks due to the lockdown and was expected to resume operations soon.