Oishee Rahman, daughter of slain Special Branch (SB) Inspector Mahfuzur Rahman, surrendered before the Paltan police station on Saturday afternoon.
Officer-in-Charge of Paltan police station Golam Sarwar confirmed the matter to the Dhaka Tribune.
Mohammad Ashrafuzzaman, deputy commissioner of Motijheel division, interrogated Oishee at his office in capital’s Motijheel.
Later, she was taken to DB police headquarters at Mintoo Road in the city.
Police recovered the bodies of Oishee's parents, SB Inspector Mahfuzur Rahman and his wife Swapna Rahman, from their residence at Chamelibagh in the capital’s Malibagh area on Friday night.
A team from the Paltan police station recovered the bodies around 7pm on Friday from their rented flat at the Number 2 Chameli Mansion.
Their blood-stained bodies were found wrapped in a bed sheet and lying on the floor of the bathroom attached to their daughter’s room. The bodies were kept on top of one another.
