Three people including a woman and her minor son were burned to death and another was critically injured in a fire at a house in Syedpara area of Chattogram port city on Sunday.
The deceased are Nur Nahar Begum, 30, her one-year-old son Maruf, and neighbour Md Imam Uddin, 23. Details about them could not be known immediately.
Condition of burned three-year-old Firiya, daughter of Nur Nahar, was stated to be critical, he said.
Ferdous Jahan, officer-in-charge of Bayezid Bostami police station, said the fire originated from a mosquito coil at the shanty of one Tota Miah and it engulfed two other adjacent shanties within a few minutes around 4:30am.
On information, police rushed to the spot and rescued four people and sent them to the hospital, he said.
Chittro Ranjan, chief leader of Agrabad Fire Station, said on information two firefighting units rushed to the spot and brought the blaze under control later.