The snooping racket had been allegedly selling CDRs of thousands of people collected through the help of a police constable.
Divulging the details, Ravindra Yadav, Joint Commissioner (Crime) of Police said that they were getting information that few detective agencies were illegally procuring CDRs.
"We sent a decoy to Scorpio detective agency in Janakpuri and trapped by them giving 5000 rupees. We arrested Pakaj Tiwary. During interrogation, it was found out that Tiwari was procuring CDRs from J.V. Rathore," Yadav said.
"Rathore runs a detective agency in Uttam Nagar, who was procuring CDRs from a constable name Narendra Kumar in Uttar Pradesh. We then arrested him in Delhi," he added.
Yadav further asserted that after the arrest of Rathore, they came to know that international firm named BLS solutions, whose branches are located in Delhi, have been purchasing huge quantum of CDRs from him.
Other arrested include Aditya Sharma and Sanjiv Chaudhary. Aditya was earlier arrested by the Delhi Police for selling CDRs of high profile persons in 2013.
The Joint Police Commissioner also informed that each CDR was procured at a minimum cost of Rs. 7,000 to Rs. 10, 000 but were sold to customers at minimum one lakh rupees.