Since Wednesday, Hamburg's streets have been filled with heavily-armed police officers. Clues indicate an impending terror attack, but so far officials have drawn a blank. CCTV Pictures taken on Wednesday night, in a Hamburg bus, show three men who are suspected by police of planning a terrorist attack. Around 1,000 police officers spent Wednesday and Thursday looking for suspected terrorist attackers in the North German port city of Hamburg. Twelve check-points were set up in the city center and cars were stopped and searched at gunpoint. Commuters on public transport were also stopped and searched. The hunt was called off...