A man and his daughter were found dead in their rented residence in Moynar Bagh area located behind the Hossain Market in city's Badda early Thursday.
The deceased were identified as Jamil, 38, and his daughter Nusrat, 9, UNB reports.
Badda Police Station officer-in-charge Kazi Wazed Ali said the double murder might have occurred at any time of last night.
On information, police recovered the bodies of father and his daughter from their roof-top residence this morning.
Jamil's body bore multiple stab wounds while Nusrat might have been strangled to death, the police official said.
Police, meanwhile, detained Arjina, wife of Jamil, from the crime scene for interrogation.