The bodies of a woman and her infant daughter have been recovered by police in Bhola.
Police have detained Billol Hossain, the husband of the adult victim, over the deaths.
It is believed the murders were the result of a family argument, said Daulatkhana Police Station OC Enayet Hossain.
The victims have been identified as Shahnaz Begum, 30, and her nine-month-old daughter Mohona.
An initial investigation indicates Billol slit his wife’s throat and then set their home on fire, said OC Hossain.
“Locals took the burned child to the hospital, but she died on the way.”
Billol has confessed to the murders, said Bhola Superintendent of Police Moktar Hossain.