Terming the threat of terrorism from the seas as worrisome, Defence Minister A K Antony today said plans were afoot to boost up real time surveillance along the coastline by installing new sensors, radars and moving air assets into the area.
"The threat from terrorism from seas is proving a real difficult area for the security forces," Antony said at the sidelines of a function to mark the Silver Jubilee of the Coastguard Aviation Wing here.
His comments come as the seas around India off Sri Lankan coast as well as in Malacca Straits are witnessing renewed clandestine operations by terrorist groups and sea-pirates.
"We have been able to contain infiltration through land borders and they are becoming tension-free, but our coastline is turning out to be a real difficult area for us," the Defence Minister said in his address to the coastguard commanders.
He told them that "hard vigil" had to be maintained to ward off such threats in the high seas as well as nearer the country's coastline.