"Ranjith KK has accepted to have passed Air Force-related information pertaining to a recent Air Force exercise, movements of aircraft and deployment of various units in Air Force," said Ravindra Yadav, Delhi police joint commissioner of crime, in a statement.
The arrest comes days after Indian Prime Minister Narendra Modi paid a surprise visit to his Pakistani counterpart Nawaz Sharif to try to ease troubled relations. The nuclear-armed rivals frequently accuse each other of spying on military activities. Police said the ISI used a woman to lure him into passing on top-secret information through mobile phone and the Internet. "As per the investigation so far, it has been assessed that (he) was befooled by the cross-border spies," Yadav added.