Apparently failing to bear the scorn and misbehaviour by her husband for giving birth to a second girl, a woman allegedly strangulated her one-month-old daughter to death at Tema Schoolpara village in Mohanpur upazila of Rajshahi.
Police recovered the body on Monday and sent it to Rajshahi Medical College Hospital for autopsy.
They also arrested Jahura Begum, 22, wife of Habibur Rahman of Chanduria village in Tanore upazila, after victim's grandfather filed a case over the murder.
SM Abul Quashem, officer-in-charge of Mohanpur Police Station, said Jahura confessed to killing her daughter.
She claimed that Habibur started misbehaving with her since she gave birth to the second baby girl one month back, he said.
On Sunday, Habibur took back their elder daughter from her father's house but did not take her and their newborn daughter, the OC said quoting Jahura.
Out of anger, she killed her daughter, he said.