The man arrested for allegedly helping three British schoolgirls cross into Syria was working for a coalition country, a Turkish official has claimed.
The official, who declined to be identified, told Reuters the spy was now in custody, adding that the man was not from the country concerned.
"The person was working for the intelligence agency of a coalition country but is not a citizen of that country," the official told the news agency. "The person was not a Turkish citizen either."
New footage appears to show three missing London schoolgirls in Turkey during what is believed to be their journey to Syria.
The families of three schoolgirls who fled to Syria to join IS have questioned claims they funded their journey by selling family jewellery.
Relatives of London schoolgirls thought to be in Syria tell ITV News police failed to warn them the girls were at risk of radicalisation.?