Police recovered the bodies of Sathi Akhter, 13, a class eight student, and her mother Kazal Begum from their residence at West Kalibari in Barisal city early yesterday.
Police said Sathi and her mother were murdered at Razia Palace near Sitlakhola on Kalibari Road.
Sources said Kazal Begum had been residing at the rented house along with her daughter. Her husband Rezaul Karim Khan Sohel, a broker at the Bangladesh Road Transport Authority (BRTA) in Dhaka, used to stay in the capital city.
Police quoted Rezaul Karim as saying that he found the door locked as he went to Barisal from Dhaka. With the help of security guard Habibur Rahman he entered the house breaking open the window, he added.
Police also said they found Kazal Begum's body lying in front of the kitchen while Sathi's in the bedroom.
Officer-in-Charge (OC) of Kotwali Police Station Rafiqul Islam suspected that the murders were pre-planned. Kazal Begum's brother Reaz Hossain filed a case accusing none.