WASHINGTON -- A competency evaluation was ordered Thursday for a man arrested with 16 guns in his car about two miles from the White House.

Jeffrey Cloutier, 33, of Newport, N.H., was arrested Wednesday after the Secret Service received information suggesting a man was driving from Pennsylvania toward the White House with explosives.

Results of the 24-hour preliminary evaluation, ordered by a District of Columbia Superior Court hearing commissioner, were to be presented to the court Friday, the U.S. attorney's office said.

Cloutier was being held for investigation of possessing unregistered firearms and ammunition.