Three workers died after inhaling toxic gas inside a septic tank of a cyclone shelter centre at Tazumuddin upazila in Bhola on Sunday.
Identities of the deceased could not be known immediately.
Tazumuddin Upazila Nirbahi Officer Pallob Kumar Hazra confirmed the deaths to Jago News.
According to the source, three workers died after falling sick when they were cleaning the septic tank at Dakkhin Chanchra village in Chanchra union of the upazila.