Syria has called on the United Nations Security Council (UNSC) to take action against Turkey for allowing a French woman linked to militant attacks in Paris to illegally enter Syria along with other foreign fighters.

France launched a search for 26-year-old Hayat Boumeddiene after police killed her partner, Amedy Coulibaly, while storming a Jewish supermarket where he had taken hostages earlier this month. Authorities described her as armed and dangerous.

Foreign Minister Mevlüt Çavuşoğlu has said Boumeddiene arrived in İstanbul from Madrid on Jan. 2 and that Paris had not asked that she be denied access. Boumeddiene crossed into Syria on Jan. 8, he said.

“That statement is a formal admission of a point that we have repeatedly made … that Turkey remains the main channel to smuggle foreign terrorists and mercenaries from around the world into Syria,” Syria’s UN Ambassador Bashar al-Ja’afari wrote in a letter to the UNSC and UN chief Ban Ki-moon.

“The country is also a route through which they return to their countries or travel to third states,” Ja’afari wrote in the Jan. 12 letter made public on Wednesday.

Damascus has repeatedly accused Turkey of supporting militants during its nearly four-year civil war. Turkey denies enabling the passage of foreign fighters who have swollen the ranks of al-Qaeda-linked groups, but has faced widespread criticism for allowing thousands of them to cross into Syria.

Any action is unlikely as the 15-member council has been largely deadlocked on how to end the Syrian conflict, with Damascus ally Russia, backed by China, pitted against the United States, Britain, France and other Western and Arab states.

Coulibaly said he carried out the Jewish supermarket attack in the name of the Islamic State in Iraq and the Levant (ISIL), a militant group that has seized swathes of territory in Iraq and Syria. His siege came after two gunmen attacked satirical newspaper Charlie Hebdo. Seventeen people were killed in three days of violence.

Ja’afari said Turkey, by allowing foreign fighters to pass through the country and into Syria, was violating UNSC counterterrorism resolutions.

“The Syrian Arab Republic therefore calls on the [UNSC] and the international community to take effective action to condemn and curb the Turkish regime’s policies,” Ja’afari wrote. “The Turkish regime must be held accountable for those policies, which endanger international peace and security.”

Turkey’s mission to the United Nations was not immediately available for comment on the accusations by Ja’afari.