Two more victims of the gas explosion in a residential building in Chattogram’s Halishahar area have died, bringing the total death toll to five. The incident occurred early Monday when accumulated gas in the kitchen of a third-floor apartment at Halima Manzil exploded. The latest victims, Md. Sakhawat Hossain, 46, and his sister-in-law Ashura Akter Pakhi, 35, died Tuesday night while undergoing treatment in the intensive care unit of the National Burn and Plastic Surgery Institute in Dhaka. Doctors said the remaining four burn victims are in critical condition.

Earlier on Tuesday, Sakhawat’s brother Samir Ahmed Suman, 40, and his 16-year-old son Safayat Hossain Shawon died from their injuries, following the death of Sakhawat’s wife, Nurjahan Akter Rani, 40, on Monday. All five deceased were members of the same family. The explosion severely injured several others, including two children and another brother of Sakhawat.

Authorities have not yet provided further details on the cause of the gas accumulation or the current condition of the survivors.