According to Kolkata Police officers, Rahul Singh was the main accused in the murder of the woman in a Kasba apartment on Wednesday.
Singh, a youth in his early 20s was working at deceased Anmol Jain's husband Manoj Kumar Jain's shop and has admitted of having committed the crime, they said.
On Wednesday night, Manoj found Anmol lying dead on the floor of their flat when he reached there after his calls to her mobile went unanswered.