Federal officials say two airplanes were intercepted and forced to land in Pennsylvania after pilots allegedly entered restricted airspace over Camp David in Maryland on Friday.
One of the planes, a Cessna, was forced to land at York Airport in Jackson Township.
That plane was intercepted by an F-15 Eagle fighter jet in the restricted airspace just after 7 p.m., according to North American Aerospace Defense.
Pilots of both planes were out of radio communication when the incidents occurred. The pilots were interviewed by law enforcement, NORAD said.
A temporary flight restriction over Camp David has been issued by the Federal Aviation Administration as a number of world leaders meet at the presidential retreat for the G-8 Summit, the federal agency said.
U.S. Air Force fighter jets are patrolling the skies, Lt. Gen. Sid Clarke, Continental U.S. NORAD Region commander, said in a news release.
"Pilots in the Camp David area are used to seeing Temporary Flight Restrictions zones over Camp David, but what makes the G-8 Summit a little different is that the Federal Aviation Administration's (restriction zone) is larger than normal. It's very important that the general aviation community remember to check their Notice to Airmen and fly informed," he said.