Deep-sea patrolling has been intensified in south Gujarat as well as neighbouring Maharashtra following a radio message intercept that hinted at the possibility of an attack akin to 26/11 in the region.

Security agencies such as the Indian Coast Guard, Customs Department, Intelligence Bureau and the Gujarat Police held a high-level intelligence review meeting in Daman on January 21 following the intercept to take adequate preventive measures.

The authorities, however, are tightlipped about the exact content of the message.

V R Kajale, Assistant Commissioner, Customs, Valsad, said his staff has been directed to extensively patrol the deep seas. Assistance has also been sought from the Gujarat Police, he added.

Valsad Superintendent of Police D J Patel, who attended the meeting, said surveillance has been intensified in the coastal areas in coordination with the Customs Department.

Sources said the Coast Guard had intercepted a message about a terror strike somewhere in Mumbai or in south Gujarat, following which the coastal areas of Gujarat and Maharashtra are on a high alert. Customs officers said they have started checking every boat and are also verifying details of the passengers.