With the arrest of a Sri Lankan national for alleged spying for Pakistan’s ISI, India’s central security agencies have stepped up surveillance of vital installations including defence and foreign consulates in southern parts of the country.

National Investigation Agency (NIA) arrested Arun Selvarajan in Chennai last week and allegedly recovered some incriminating documents including layout plans of country’s defence establishment including the Coast Guards complex.

During preliminary interrogation before being sent to judicial custody, Selvarajan, who is also wanted in Sri Lanka for allegedly supporting banned LTTE terror group, told that he had supplied information about some strategic locations to ISI handlers based in Colombo who were operating from the Pakistan’s High Commission, Indian media reported citing local intelligence officials.

Selvarajan has again named Amir Zubair Siddiqui, who was working as Visa Counsellor at Pakistan High Commission based in Colombo till some time back but had to be repatriated to Islamabad after India mounted pressure on Sri Lanka about his alleged activities targeting this country.

However Pakistan’s Press Attache in Colombo Muhammad Daud Ehtisham was quoted in Sri Lankan media saying that Siddiqui returned after completing his tenure in the island nation.