Rameswaram: Sri Lankan naval personnel have arrested 20 fishermen on charges of allegedly violating the International Maritime Boundary Line. Their four boats have also been taken into custody. Eleven of the fishermen belong to Rameswaram. They were arrested near Katchatheevu and taken to Talaimannar. Other fishermen hailing from Jagadapattinam in Pudukottai district were arrested near the Sri Lankan coast and taken to Kangesanthurai. Assistant director of fisheries department, Gopinath said a boat had sunk near Katchatheevu and six fishermen in it were rescued by other fishermen and brought to safety.