A woman and her associate were arrested from Chattogram on Thursday night for holding a lawyer hostage and attempted ransoming.
The arrestees have been identified as Zobaida Sultana Hira alias Sonia and Imran.
Sonia is the leader of a notorious fraud gang, Double Mooring Police Station Officer-in-Charge (OC) Mohammad Mohsin told the media Friday evening.
Police said Sonia requested lawyer Habibur Rahman Azad to come to her place to help her out with a case. When he went there, three men nabbed him and demanded Tk 20,000.
The also threatened to kill him if he did not give them the money.
But Azad managed to call police. A team from Double Mooring Police Station raided the house on Thursday night and rescued the lawyer.
Police say they are trying to arrest the other criminals associated with the gang.
Sonia told police during interrogation that her gang was involved in at least 50 similar cases in the last 10 years, the OC said.
She is accused in three criminal cases filed at various police stations in the port city.