WASHINGTON (CNN) - A light aircraft flew into restricted airspace Friday in Washington, prompting brief security alerts at the Capitol and the White House, the Federal Aviation Administration said.
Authorities soon confirmed there was no security threat, and gave an "all-clear."
For a few minutes during the security alert, the Senate adjourned and the White House went into lockdown mode.
The Department of Homeland Security said proper procedures were followed, and the pilot of the light aircraft immediately responded to calls from authorities to leave the restricted airspace.
Two F-16s escorted the Cessna 180 to an airport in Indian Head, Maryland, as two Coast Guard helicopters hovered nearby, FAA officials said.
The FAA said the Cessna had entered restricted airspace from the northeast.