A Somali born teenager has been arrested in Portland, Oregan after he attempted to detonate a car bomb at a Christmas tree lighting ceremony.
However, Mohamed Osman Mohamud was the victim of a FBI sting.
Agents shadowed the 19-year-old for months and met with him several times as the plot developed, they also provided him with a fake explosive device.
The naturalized US citizen is alleged to have told officers that he had dreamt of waging holy war since he was 15.
He has been charged with attempting to use a weapon of mass destruction and faces life in prison if convicted.