According to the police, no bullet shells were recovered during the combing operation and neither any bullet mark found in the airport area.

Meanwhile, movement at the airport, including the flight operations were put on hold for nearly 45 minutes, he said adding it was resumed there after.

The normal rush at the airport continued with the passengers movement on the airport going smooth, an airport official said.

According to initial reports, the entire incident could have been a part of the mock drill to check the security preparedness at the airport.

However, the security has been beefed up at the airport with the deployment of additional security personnels.

Senior CISF officials have also arrived at the scene to take stock of the situation.

CISF officials said all preventive measures have been taken and a security drill has been put in place.

Airports across the country have been put on high alert in the wake of intelligence reports that terrorists from Pakistan or Afghanistan may strike using a hijacked aircraft even as the Indian Air Force said it was ready to counter a 9/11-type aerial attack on New York.