"You have to understand that our territorial waters extend upto 12 nautical miles. Anything that happens beyond that is not within the realm of our control," Deputy National Security Advisor Nehchal Sandhu told reporters on the sidelines of a function here.
"So, if there is a ship beyond that and doing whatever it is doing, then what can anybody do in terms of law. You cannot concoct law," he said.
An FIR has been registered against 10 crew members and 25 guards of the detained ship by the Tamil Nadu Marine Police for illegally carrying arms and ammunition.
Another case under the Essential Commodities Act has been registered against the crew for buying 1,500 litres of diesel illegally with the help of a local shipping agent.
Sandhu refused to see any "political connotations" in the ship carrying 31 assault rifles and around 5,000 rounds of ammunition, which were seized by the Coast Guard.
The Deputy NSA said the investigations are being carried out by the Tamil Nadu Police.
