Turkey has captured the elder sister of the slain Islamic state of Iraq and the leader of the Levant (ISIL or ISIS) Abu Bakr al-Baghdadi in a raid in northwestern Syria, a senior Turkish official said.
The officer continued to say Monday, the day 65-year-old Rasmiya Awad was arrested with her husband, daughter-in-law and five children in a caravan container where she lived near the city of Azaz, Aleppo Province.
More:  The adults are interrogated, he said, speaking to news agencies on condition of anonymity that the arrest was a "gold mine".
"This kind of thing is a goldmine of the secret services, and what it knows (ISIL) can greatly increase our understanding of the group and help us catch more bad guys," the official said.
Analysis: The Fate of ISIL and Its Global Impact (05:56)
The arrest occurred days after US President Donald Trump announced in late October that US forces would have carried out an Operation Killing al-Baghdadi in the Syrian province Idlib.
The Communications Director of Turkish President Recep Tayyip Erdogan said the arrest of the woman is proof of Turkey's determination to fight ISIL The success of our counterterrorism operations, "wrote Fahrettin Altun on Twitter early Tuesday.
A lot of dark propaganda against Turkey has been spread to raise doubts about our determination against Daesh, "he wrote using the Arabic abbreviation for ISIL 19659005]" Our strong counter-terrorism cooperation with like-minded partners can never be questioned. "
Azaz is part of the Turkey-managed region after conducting a military operation to expel ISIL and Kurdish fighters whom she considers to be "terrorists" from 2016. Allied Syrian groups manage the area known as the Euphrates Shield Zone Area.
Under the command of al-B aghdadi became one of the most brutal armed groups in modern history and at its peak its self-declared caliphate-covered territory throughout Iraq and in Syria, which is about the size of the United Kingdom. In the following years, the group was gradually freed from its territory by a series of offensives, and the combatants lost their last resource in Syria in March this year.
Five days after Trump's announcement ISIL confirmed the death of al-Baghdadi and identified his successor as Abu Ibrahim al-Hashemi al-Qurayshi. It contained no further details about the new leader.
A senior US official said last week that Washington had visited the new leader to determine where he came from.
World leaders welcomed his death, but she and security experts warned that the group remains a security threat in Syria and beyond.
Al Jazeera and news agencies