Security at airports across the country has been stepped up in the wake of intelligence inputs that terrorists might try to hijack a plane or carry out a suicide attack.
The Union Home Minsitry Wednesday night issued a "general alert" with a special mention of the Mumbai airport asking security personnel to maintain a tight vigil on all vehicles approaching the airport, informed sources said in New Delhi Thursday.
The alert is understood to have been issued following an intercept suggesting that militants might carry out a suicide attack aimed at hijacking a plane.
Following the alert, Quick Reaction Teams of the Central Industrial Security Force, guarding the airports, have been kept in a state of readiness and security tightened with the erection of additional barricades in several places.
At the Indira Gandhi Airport in Delhi, CISF had erected extra barricades while taking care to ensure that there was no disruption in the movement of passengers.
In Srinagar and Jammu, Central Reserve Police Force intensified patrolling around the airport complex and a multi-tier security ring has been laid around the premises to ward off any militant attack.
Reports of heightened security were also received from other state capitals like Hyderabad and Chennai where security personnel were seen frisking everyone entering the premises including the airport staff.