Tamil Nadu government despatched a preliminary report on the incident to the Home Ministry and RAW and IB have joined the investigatgins along with other agencies to ascertain whether the crew had documents for all the weapons they carried on board the vessel for a detailed report, they said.
The final report on the investigation would be sent to the Home Ministry, they said.
Meanwhile, the Tamil Nadu police have launched a manhunt for two men who allegedly procured and supplied diesel illegally for Seaman Guard Ohio.
"We want to take them into custody to probe if the deal with Ohio pertained only to diesel," an official said.
An FIR was registered against 10 crew members and 25 guards of the vessel under various sections of the Arms Act, after the ship flying the Sierra Leone flag was intercepted by the Coast Guard in Indian waters some 15 nautical miles off Tuticorin coast on Saturday.
