Turkey said on Monday, Reuters reports it had deported 11 French nationals back to France as part of a program to extradite what it says are foreign terrorist fighters, Reuters reports.

Turkey’s Interior Ministry, which made the announcement, gave no details. France’s Foreign Ministry declined to comment, but diplomatic sources said the 11 included four women and seven children.

Turkey is holding hundreds of Islamic State suspects and last month launched a program to repatriate detainees that has caused friction with its NATO allies.

Ankara has accused European countries of being too slow to take back citizens who traveled to the Middle East to fight.

Turkish Interior Minister Suleyman Soylu said in November that Ankara would repatriate most detainees with suspected links to Islamic State by the end of this year.

The move is forcing European governments to decide how to handle the return of radicalized militants, including those with battlefield experience.

Paris signed an agreement with Ankara five years ago for French nationals arrested by Turkish authorities to be deported in coordination with the French authorities. Turkey has expelled almost 300 French nationals since then, French officials say.