The stun grenade, which had no explosive in it, was found on the upper deck business class of the Boeing 747-400, which was operating flight AI-965 on Mumbai-Hyderabad-Jeddah route, official sources said, adding that the aircraft was taken to a remote bay, checked by the local security personnel and later granted operational clearance.
"The grenade may have remained after the mock drill .... It has BSF markings," Raju told reporters at Vizianagaram. The security drill was carried out by National Security Guards between September 24-27 at select airports and aircraft across the country to check the alertness of the crew and others concerned.
The Minister's statement came hours after an Air India press release said "after screening the aircraft and the object which was found to be a plastic wrapper, the Jeddah airport security cleared the aircraft for further operations."
A joint team of Air India and the Bureau of Civil Aviation Security was rushed to Mumbai this morning which was investigating the incident and questioning those concerned in order to fix responsibility, the official sources said.
On landing, the pilots were asked to take the plane to a remote bay where the security personnel took out the grenade and found it not having any explosive, the sources said.