They were arrested near Katchatheevu, an islet ceded to Sri Lanka by India in 1974, and were taken to Thalaimannar along with their boat, Assistant Director of Fisheries Department, P Ravindran and Rameswaram Fishermen Organisation President, S Emerit said.
The Naval personnel had on December 9 fired in the air and damaged more than 20 fishing nets to chase away fishermen from Tamil Nadu while fishing near Katchatheevu and other places.