A fire killed all eight of a family, including four children, in Joypurhat town on Wednesday night.
Sirajul Islam, inspector of fire service and civil defence in Joypurhat, said the fire originated from an electric short circuit.
The victims are Dulal Hossain, 71, his wife Momena Begum, 62, their son Abdul Momin, 48, his wife Parina Begum, 38, and their four children -- Bristi, 14, twins Hasi, Khushi, 12, and one-and-a-half-year-old Taimul Islam Noor. They were residents of Armannagar area.
Bristi sat for this year's Junior School Certificate examinations, and the twins were class-VII students.
Joypurhat police, and fire service and civil defence office said the fire broke out at the tin-roofed house of Abdul Momin, a chicken trader, around 9:30pm.
As the entry gate to the house was locked from inside, none of the family members could come out of the house. Three people -- Momin, Bristi and Momena -- were burnt to death inside the house, said Selim Hossain, a neighbour.
On information, firefighters and rescue response team of fire service and civil defence rushed to the spot and rescued five injured by cutting the window grilles and admitted them to Joypurhat Modern Hospital.
The flame was doused around 1:00am yesterday and then the charred bodies were brought out from the house, said Dulal's younger brother Zakir Hossain.
Doctors of the hospital referred the injured to Dhaka Medical College Hospital's burn unit as their condition was critical.
When the injured were being taken to the DMCH, Parina Begum and her three other children died. Another wounded Dulal died after being admitted to the DMCH.
Abu Sayeed Al Mahmood Swapan, local lawmaker, Rashidul Hasan, superintendent of Joypurhat police, and Mostafizur Rahman Mostaque, mayor of Joypurhat municipality, visited the spot.
The deceased were buried at Joypurhat graveyard in the evening.
Meanwhile, three committees were formed by police, fire service and civil defence, and the district administration to investigate the fire incident. They were asked to submit their reports within three working days.