Law enforcers have arrested the prime accused on Tuesday night in a case over the killing of a woman and her son in Sylhet on Sunday noon.
The arrestee was identified as Nazmul Hasan, 40, son of late Karim member and a resident of Muktir Chalk of Sadar upazila.
A team of Kotowali Police arrested Nazmul from Shah Poran gate area of the city at night, said assistant superintendent of police Sadek Kawser at a press briefing on Wednesday afternoon.
According to UNB, the police official said that Nazmul borrowed money from Rokeya Begum for running a business together. Nazmul might have killed Rokeya following brawl over the money.
Police on Sunday noon recovered the bodies Rokeya Begum, 40, and her SSC examinee son Rabiul Islam Rokon, 15 from their rented house in Mirabazar area.
