A 19-year-old Somali-American man has pleaded not guilty to an alleged plot to blow up a car bomb at an Oregon Christmas tree lighting ceremony in Portland.
Mohamed Osman Mohamud entered the plea Monday in federal court in Portland.
An indictment filed earlier in the day charged him with attempted use of a weapon of mass destruction.
Mohamud was arrested Friday evening near the crowded Pioneer Courthouse Square in downtown Portland, amid an FBI sting operation that followed months of investigation.
A judge set a tentative trial date for Feb. 1.