The Bureau of Civil Aviation Security has sounded an alert against a possible terrorist strike.

“The BCAS has issued an alert for a terror strike at the Indian airports,” sources here said.

The alert was issued on June 14. A spokesperson said vigil was being mounted at all airports, though no “fresh” alert was issued.

Airlines and airport operators were asked to be vigilant. Security at the airport here, one of the busiest, was stepped up.

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