Four workers died after suspected toxic-gas exposure while cleaning a food-waste chamber at Hotel Shriganga on Dewas Road, Ujjain, on October 31 night, IANS reported on November 1.
Rescue teams cut open the chamber to retrieve them. Police are examining whether gas checks and protective equipment were provided.
Post-mortem and investigation findings are awaited. Negligence and the precise cause of death have not been established in this report.