The arrested have been identified as Anil Pratap Singh Chauhan (50), Arun Kumar (46), Raju Diwakar (42), P Mary Zelem (49), the woman, and two Nigerians Alex Emechebe (38) and Alloy Frank Micheal (31).
The first to be arrested were Chauhan, a graduate, and Kumar from Delhi Cantt area on October 12.
It came to light during interrogation that they were part of an international drug syndicate operating in Uttar Pradesh, Haryana and Delhi, and Chauhan was gang leader, police said.
Mary Zelem was then arrested from her residence in Gurgaon and later others were also apprehended.
Chauhan has been allegedly in drug supply for the last 20 years. He is also in politics and was district president of a regional party for five years.
