Parts of the White House, Capitol and Supreme Court were briefly evacuated Wednesday when a small plane violated restricted airspace over Washington, the White House said.
Fighter jets and a Black Hawk helicopter were scrambled to intercept a high-wing Cessna, said White House spokesman Scott McClellan.
President Bush was not at the White House at the time. Vice President Dick Cheney was in the West Wing of the building when the alert was issued and was moved to a secure location, McClellan said.
The plane was within three miles of the White House before it was turned away by the military aircraft, McClellan said.
The terror alert level was raised to orange -- or high -- when the airspace incursion was first reported, and then raised to red -- severe -- when the pilot failed to respond to calls on his radio, McClellan said.
The plane was escorted to a small airport in Frederick, Maryland. The pilot was being interviewed by local authorities and the Secret Service, McClellan said.
An all-clear announcement was issued about 15 minutes after the evacuation alert.
People streamed out of the White House after being told to evacuate.