It was disclosed at a press briefing on Sunday.
The arrested are Sadequl Islam, Mohammad Irfan, Mohammad Ali Rifat, Kutub Uddin, Masum Rana and Golam Rabbi.
Detectives busted the ring while investigating an abduction case of a businessman, said Dhaka Metropolitan Police (DMP) additional commissioner of the DB AKM Hafiz Akhter.
Anwarul Islam was abducted from Dhaka’s Uttara area on November 29, 2020.
The DB officer said that four to five members of the gang abducted Anwarul Islam and took him into their microbus while he was waiting for a car near the House Building area.
They extorted Tk 3.34 lakh from the victim’s family members through mobile financial service for his safe return, the DB official said ,adding the abductors freed him in Uttara later.
This gang abducted at least four persons in the last couple of months, the additional commissioner said.
The arrested were accused in several cases filed with Uttara East, Uttara West and Airport police stations.