NEW DELHI: Telephone calls of about 5,000 people are being recorded by central security agencies daily as part of security and preventive measures.
Government sources said on an average telephones of about 5,000 people are being kept under surveillance by intelligence agencies suspecting their linkages with terror activities, hawala operators and members of banned organisations.
Telephones of a number of people involved in various economic offences are also being monitored.
Sources said that conversations of terrorists and insurgent outfits in Jammu and Kashmir, Northeast and the banned CPI (Maoist) are mostly under the scanner of intelligence agencies.
"A lot of times the phone tapping is done for only sixty days. But when it involves persons who are facing any criminal case or are under the scanner of investigating agencies, their phones are kept under surveillance for a longer period," a senior Home Ministry official said.
As per official procedures, the phone tapping by intelligence agencies is done with the consent of the Union Home Secretary . The government can authorise tapping for 60 days which can be extended again as per needs.
The sources said that emails are also being monitored by government agencies after getting the consent of the service providers.
Sources said that tapping of telephone conversations of leading corporate lobbyist Niira Radia, whose name has cropped up in the 2G Spectrum row , with several influential persons were authorised by the government