After the Kingfisher flight scare, the BCAS had already issued new guidelines to all airlines and security agencies to beef up security surveillance and anti-sabotage checks at south Indian airports, especially high risk targets like Bangalore and Hyderabad.
Airlines sources said that BCAS has issued a new order to further increase security onboard flights in south India by deploying sky marshals on routes considered high on the terror radar.
"Deployment of sky marshals onboard flights is confidential and based on the security requirements of particular routes. Flights operating on a few routes between south Indian cities could have them onboard the aircraft," a security official said.