The Secret Service has reportedly arrested an intruder who climbed the White House fence on late Sunday night, marking the latest incident in a series of security breaches at the presidential residence since last year.
The White House has received poisonous cyanide packed in an envelope carrying the address of a man who had earlier sent a similar package
A man was arrested outside White House for attempting to scale a bicycle barrier at the main fence.
White House reporters were evacuated from the media briefing room in the middle of press conference by the presidential spokesperson Josh Earnest, after law enforcement agencies received a bomb threat call.
A Texas man arrested for intruding into the White House was armed with a foldable knife, prompting a comprehensive review of security procedures after two attempted breaches in 24 hours at one of the world's most heavily protected buildings.
Two senior United States Secret Service agents are being investigated over allegations that they crashed a government car into White House security barricades under the influence of alcohol, a media report said.