An anonymous threat letter was received by the Director of the Airport Authority. The letter mention about attacks on two Air India Flights. The two flights mentioned are the Friday night flight from Ahmedabad to Mumbai, and the Saturday morning flight from Mumbai to Kochi.
These and all other airports are put on high alert. Security checks have become stringent, anti-hacking unit, and the bomb squad were deployed at the airports. The Bureau of Civil Aviation has written a alert letter to the airports. The letters contains the details of the Flight and the Flight timing.
As per the Intelligence report, the mission could be executed using suicide bombers. These suicide bomber could board the planes from the targeted airports.
Even though with the nature of the letter received and the sequence of the events indicate that the warning could be a hoax. The authorities are not taking any chances.