Colombo, July 18: A bomb scare held up a Cathay Pacific flight from Colombo to Hong Kong for nearly six hours today, airport officials here said. Flight CX700 to hong kong via bangkok left nearly six hours after its scheduled departure at 2.45 AM. (0215 IST) yesterday, an airport official said. She said an anonymous caller had warned of a bomb planted aboard the aircraft, but a thorough search proved it a hoax. Bureau Report