Chief Metropolitan Magistrate Vidya Prakash allowed the Special Cell of Delhi Police to quiz in custody till February 22 Nitin, Anurag and Neeraj.
Nitin and Anurag were arrested from Mukundpur in north west Delhi today, while Neeraj was nabbed yesterday.
Delhi Police constable Arvind Dabas was the first accused who was arrested in the case.
During the proceedings, police today sought their custody for five days saying they have to crack the "encrypted devices" used by the accused in which a large amount of data has been gathered over a period of two-three months.
Meanwhile, the court also directed the investigating officer to supply the copies of FIR to the counsel of accused and made clear that the contents be not leaked.
During the day, the counsel for Arvind Dabas said that the legal rights of his clients were being infringed due to non-supply of the FIR.
"How am I supposed to pursue the legal remedies available to me if I am not ever supplied the copy of the FIR in a case against me? It is also a violation of my human rights," Naushad Ahmad Khan, counsel for Dabas, said.
The police custody of Dabas expires tomorrow.
Police later told the media that they were also probing a probable corporate angle to the case.
One of the accused Anurag was also arrested in the Amar Singh phone tapping case, they said, adding that other accused Neeraj used to run a background check on prospective brides and grooms.
Anurag, who had the access to sophisticated spying devices, used to solicit support of co-accused Nitin and Neeraj after getting clients, they said.
New Delhi: Three private detectives, arrested for allegedly attempting to retrieve call detail records of BJP leader Arun Jaitley, were on Tuesday remanded in three days police custody by a Delhi court.
First Published: Tuesday, February 19, 2013, 22:27