A Lucknow-bound Kingfisher Airlines flight with 166 passengers and 4 crewmembers on board was grounded here on Thursday after an anonymous phone call warning of a bomb planted in the plane. The aircraft was taken to a remote bay and all the passengers have been deplaned. A Kingfisher Airlines spokesperson Manish Kalgetgi said that the security agencies thoroughly checked the aircraft and nothing was found. The flight left for Lucknow.