A fibre boat was found abandoned in Munaikadu near the Mandapam beach in Rameswaram, early on Tuesday.
A preliminary investigation indicated that the boat was from Sri Lanka. The whereabouts of its occupants is unknown, while a physical check revealed nothing inside the boat. Police said that the registration number, OFRP-A-3156-MNR, suggested that it belonged to Sri Lanka.
Central and state intelligence teams and surveillance agencies have been alerted about the abandoned boat, a senior police officer said.
