A boiler blasted in Shiyalcoal Bazar area of Sadar upazila of Sirajganj on Wednesday evening.
Abdul Mannan, chairman of Shiyalcoal union parishad, said that boiler of a husking machine exploded while 4-5 workers were working at a rice mill in the area around 6pm, leaving three workers burn injured.
Three workers including two women were injured in the blast.
The victims were identified as Sober Ali, 50, Sakera Beoya, 48 and Hafiza Khatun, 35, all residents of Shiyallcoal village.
The condition of two among the injured was critical.