Three brothers were killed when the septic tank of an under-construction house exploded in Feni Municipality on Tuesday morning.
The identities of the deceased could not be known yet.
Fire service official Purno Chandra Mutsuddi said that the explosion may have happened due to the accumulation of gas in the septic tank of the house on Anwar Ullah road. The explosion left one dead on the spot and two others injured.
Later, the injured were taken to 250-bed Feni General Hospital where on duty doctor declared them dead.