CCTV footage shows three British teenagers suspected of planning to join Islamic State (IS) militants in Syria, being arrested at Istanbul airport.
The three teens were arrested on suspicion of preparation of terrorist acts after being detained in Turkey and have since been bailed.
The suspects - two 17-year-old boys and one 19-year-old man, all from northwest London - were arrested on Saturday by officers from the Metropolitan Police's Counter Terrorism Command.
CCTV footage has been released which appears to show three British schoolgirls, who it is feared have entered Syria to join Islamic State.
The images were released by Turkish news channel A Haber.
The three girls, believed to be Shamima Begum, 15, Kadiza Sultana, 16, and 15-year-old Amira Abase, are seen at a bus station in Istanbul in the video.
They can be seen leaving a part of the station in the early hours of the next morning along with other passengers and walking along snow-covered pavements into a busy departure lounge.
In the footage, the girls are shown wrapped up in heavy winter jackets, two with furry hoods pulled up, and carrying packed sports bags and holdalls.
Merve Büyüksaraç, Miss Turkey in 2006, faces two years in jail after she shared a post on Instagram that allegedly 'insulted' the presidentRead the full story ›
Turkey has criticised British authorities for taking three days to alert the country over the three teenage schoolgirls believed to be on the way to Syria via Istanbul.
Shamima Begum, 15, Kadiza Sultana, 16, and 15-year-old Amira Abase are still missing after they boarded a flight from Gatwick Airport to Istanbul last Tuesday - feared to be intending to join the so-called Islamic State (IS).
Turkish deputy prime minister Bulent Arinc said that British officials would be to blame if the girls cannot be found.
He said: "It is a condemnable act for Britain to let three girls come to Istanbul and then let us know three days later. They haven't taken the necessary measures.
"The search is ongoing. It would be great if we can find them. But if we can't, it is not us who will be responsible, but the British."
Turkey's Prime Minister Ahmet Davutoglu said the military operation to evacuate 38 soldiers who were guarding the tomb of Suleyman Shah involved 100 military vehicles and 39 tanks.
Mr Davutoglu added that Turkey did not seek permission or assistance from other parties ahead of the operation.
The operation was successful, with the 38 soldiers safely back in Turkey, Mr Davutoglu told a news conference in Ankara.
Turkey's Prime Minister Ahmet Davutoglu said the remains of Suleyman Shah have been moved to a different area in Syria which has been brought under the control of the Turkish army.
Turkey's armed forces launched an operation on Saturday night to evacuate soldiers guarding the mausoleum of Suleyman Shah who is the grandfather of the founder of the Ottoman Empire.
Turkey's military said there were no clashes during the operation but one soldier was killed in an 'accident'.
One Turkish soldier was killed in an accident during the operation to evacuate troops from the Suleyman Shah tomb in Syria, two senior Turkish officials told Reuters.
The operation is now complete and Turkish soldiers have been successfully evacuated.
The Turkish military launched an operation into Syria on Saturday night to evacuate Turkish soldiers who were guarding the Suleyman Shah tomb, sources told Reuters news agency.
The Turkish government said late last year that Islamic State militants were advancing on the mausoleum, which is guarded by several dozen Turkish soldiers.
The tomb was made Turkish territory under a treaty signed with France in 1921, when France ruled Syria. Turkey regards it as sovereign territory and had repeatedly vowed to defend it from any attack by the insurgents.