Manirul Islam Mollah alias Bablu (29), allegedly the prime accused in the murder of the woman, a sex worker, with whom he was living in at Burtolla in north Kolkata, was arrested from his hideout in Domjur early this morning, a senior Kolkata Police officer said.
Mollah, a fruit seller by profession, hailed from the South 24-Parganas district, the same district as the victim did.
A primary probe suggested that the two were in a relationship. They fell out over the continuation of the woman as a sex-worker, which Mollah had objected.