The story

The three terror suspects arrested last week in Germany may have sped up their bombing plot after a loud-talking police officer inadvertently alerted them that they were on a federal watch list, an unnamed source with knowledge of the investigation told CNN.

The men were stopped by a traffic officer in the weeks prior to their arrest last Tuesday. The traffic stop was described by the head of Germany's Federal Criminal Investigation Office, Joerg Ziercke, as "a setback for the group."

But it may have also been a boon for the suspects, who had been under surveillance for over six months. Read full article »

CNN's Diana Magnay and Frederik Pleitgen in Berlin contributed to this report.

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