(CNN) Turkey has captured the sister of slain ISIS leader Abu Bakr al-Baghdadi in the northern Syrian town of Azaz, according to a senior Turkish official, who shared an image of Rasmiya Awad's falsified identity card exclusively with CNN.

Not much is known about Awad, 65, but Ankara hopes her capture will lead to a wealth of intelligence about the militant group. She is currently being questioned by authorities.

"This kind of thing is an intelligence gold mine. What she knows about ISIS can significantly expand our understanding of the group and help us catch more bad guys," the Turkish official said.

Awad was detained in a raid on a metal container housing unit in Azaz, Aleppo province, part of a region that has been administered by Turkey since it carried out an operation to clear the border of ISIS militants in 2016.

The Turkish official did not provide details about the date of the operation.

A photo handout provided by Turkish officials, of who they say is Rasmiya Awad, the sister of slain ISIS leader Abu Bakr al-Baghdadi.

Awad's fake ID card identified her under the pseudonym Rajha Alllawi Ahmed.

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