All of them were taken to Talaimannar coast along with their three boats, police said quoting Fishermen's Association President Emirit and Sesuraja.
A group of fishermen in 734 boats had gone for fishing in the sea last evening. As the fish availability was very poor, they had crossed over to the Sri Lankan territory.
Indian fishermen were not allowed near Katchatheevu, though they had the right to dry their nets in the island as per the agreement under which the islet was ceded by India to Lanka in 1974, they said.
