Thirteen fishermen from Tamil Nadu were arrested by Srilankan navy early this morning. <br />''<br />''They have been arrested on charges of trespassing the international maritime boundary. While fishing near Neduntheevu islet in the sea, they were apprehended and taken to Kankesanthurai for inquiry. <br />''<br />''Their three mechanised boats have been impounded. Eyewitnesses say, hundreds of other fishing boats were chased away by the naval personnel of the island nation. <br />''<br />