NEW DELHI, Jan. 4-- Indian intelligence agencies have warned that a Delhi-Kabul flight of India's carrier Air India may be hijacked by terrorists, said local daily The Times of India online on Sunday.

A high alert has been sounded after the intelligence input and the Indira Gandhi International airport in the Indian capital has been alerted and stringent checks of even the staff members have been instructed, said the report.

The authorities have put in place "multi-level" checking and have issued strictures to ensure they are followed judiciously, with additional ladder-point check put in place and the ground staff asked to thoroughly check all cabin baggage once the passengers boarded, said the report.

Commandos will also patrol the adjoining areas of the airport with machine gun-mounted vehicles. The number of flight marshals have also been increased and cabin crew have been asked to look out for problem elements, it added.

In 1999, terrorists hijacked an Air India passenger plane in southern Afghanistan'sKandahar city.