A 15-year-old girl who was believed to be heading to Syria to join Islamic State fighters has been stopped by police just moments before her plane was about to take off.
It is believed she had planned to then continue her journey over the border into Syria.
The girl was reported missing by her family, who Sky's Crime Correspondent Martin Brunt said were unaware of her intentions.
"Until she went missing they had no idea what she was planning," he said.
According to Brunt, the girl had apparently been saving money secretly in order to buy a ticket to Istanbul.
Police checks revealed the girl was booked on a flight, and officers managed to get the plane stopped as it was taxiing on the runway earlier this month.
Brunt added the teenager has been allowed back home with her family and "all signs suggest she is back living and settling back" with them.
He added Scotland Yard sees the incident as an example of how the Government's Prevent strategy, which aims to counter home-grown terrorism, can work.
"For the last three or four years officers have been liaising with communities, ethnic minority Muslim communities all over the country, and encouraging families to do exactly what this family appears to have done," Brunt said.