The White House went into a security lockdown while President Barack Obama was inside after a woman jumped a fence and was taken into custody, the Secret Service said.
Journalists were not permitted to leave the building for more than an hour during the incident.
Secret Service spokesman Ed Donovan said the woman jumped the north-east fence surrounding the White House at 3.17pm local time.
The woman was transferred to the Washington Metro Police Department.
COMMENT RULES: Comments that are judged to be defamatory, abusive or in bad taste are not acceptable and contributors who consistently fall below certain criteria will be permanently blacklisted. The moderator will not enter into debate with individual contributors and the moderator’s decision is final. It is Belfast Telegraph policy to close comments on court cases, tribunals and active legal investigations. We may also close comments on articles which are being targeted for abuse. Problems with commenting? email@example.com