Dhaka, Oct. 19 -- Police took into custody Hasina Begum, 28, hours after Abu Taher, 35, a day labourer from Noakhali, and their daughter Bibi Fatema were found dead with their throats slashed at home in the port city's Nimtala area on Saturday.

Hasina's "extramarital affair" may have led to the murders, police said. She was believed to be at home when the two were killed, Bandar Police OC Sukanta Chakraborty said, citing initial evidence.

Police recovered the bodies of Abu Taher and Fatema. Hasina works as a housemaid in the area.

Police also detained Hasina's sister, her husband, and a security guard of the area, Chakraborty said.

It was both Taher and Hasina's second marriage, a police official said. He sought to be anonymous as the...