CHENNAI: The NIA conducted searches at 20 locations across Tamil Nadu on Tuesday including Chennai and Mayiladuthurai.
According to a Thanthi TV report, the investigation is based on information linked to ISIS terrorist movement.
NIA conducted searches across 15 houses at Sirkazhi and its surrounding places for suspected links with ISIS.
Sources said, the searches were being held at Sirkazhi and Thirumullaivasal and adjacent locations by 15 teams.
(with inputs from bureau)