We turn now to the skies over England tonight and a white knuckle moment on board a passenger plane, looking out the window and seeing this, a fighter jet off the wing escorting that plane to the... See More
We turn now to the skies over England tonight and a white knuckle moment on board a passenger plane, looking out the window and seeing this, a fighter jet off the wing escorting that plane to the nearest airport. That dramatic moment captured by people on the ground and all of it triggered by a note sent to the pilot in the middle of the flight. ABC's lama Hasan tonight. Reporter: The flight was just minutes from landing. That's when, out the window, some of the 269 passengers saw this -- a royal air force typhoon fighter jet responding to an emergency. I turned around and saw the fighter jet outside my window. That was the point where I started shaking. Reporter: What the passengers didn't know is the pilot radioed in an alarm after being handed a note from a man that an explosive device was on board. The plane, heading from Doha, Qatar to Manchester. The fighter jets scrambled to escort the plane in. Once on the ground, armed police swooped in, arresting the passenger who passed the note. It was terrifying, just terrifying all the way through. You just never really think you'll be in that sort of situation, really. Reporter: Airlines around the world are on edge. We saw it in Canada just two weeks ago. A S.W.A.T. Team storming a flight after a threat was made. Today in great Britain, passengers once again shaken up. David, fortunately no suspicious device was found on board. Tonight, the passenger who made the bomb threat is still in police custody being questioned. David?
This transcript has been automatically generated and may not be 100% accurate.