Two fighter jets scrambled Tuesday after two small aircraft violated airspace restrictions in place for the U.N. General Assembly gathering of world leaders close to the time President Barack Obama was speaking.

North American Aerospace Defense Command spokesman John Cornelio said the F-22s intercepted the small planes during two separate incidents over New Jersey around 11 a.m.

The Federal Aviation Administration said the pilots did radio for permission to enter the airspace. It took one plane 20 minutes to exit and the other 14 minutes.

They were forced to land at Central Jersey Regional Airport.

The FAA will investigate before deciding whether to punish the pilots.

FAA spokesman Jim Peters said the temporary no-fly zones were established around the New York City area because of the U.N. meeting.