(BBC News) – The Secret Service has erected a second fence between the White House and a thoroughfare popular with tourists, local residents and workers, days after a man scaled the main fence and entered the mansion through an unlocked door.
The Secret Service said the new fence created a “temporary buffer zone” while it reviewed its procedures.
The new barrier is a series of linked sections about a metre (3.2ft) high.
Omar Gonzalez, 42, is being held in connection with the Friday intrusion.
Authorities say he was carrying a 9cm (3.5in) knife and faces charges of unlawfully entering a restricted building carrying a “deadly or dangerous weapon”.