Authorities of an airport in Bangladesh halted work for two hours on Friday at the air facility after being warned about a bomb aboard an aircraft flying to Dubai with 150 passengers on board. The Indo-Asian News Service quoted an official of Bangladeh's civil aviation as saying in the capital Dhaka that the authorities at Shah Amant Airport in the southern city of Chittagong halted traffic for two hours after the observation tower received a telephone call from an anonymous caller warning that a bomb had been planted on board of the aircraft.The airport received the bomb alert one hour before the Biman airways aircraft was scheduled to take off with 180 passengers aboard it. Security personnel thoroughly searched the plane but no bomb was found, after which normal work resumed at the air facility.