An “upset” passenger at the Oakland International Airport was responsible for briefly shutting down Terminal 1 after issuing an unfounded bomb threat on Sunday afternoon, police say.br br The man, who was not identified, had apparently told an airline staffer that he had a bomb in his luggage because he was “irate” over a delayed flight, according to the Alameda County Sherriff’s Office.br br The carrier contacted police, who arrived on scene and arrested the suspect after a “brief struggle.”br br Terminal 1 was subsequently shut down for two hours while a bomb squad located the man’s luggage and determined the threat to be “unfounded.