The spokesman of Iraq's Supreme Judicial Council, Abdul-Sattar Bayrkdar, said in a statement that Abu Omar al-Baghdadi's sister was found guilty for "offering logistic support and help to (the militants) in carrying out criminal acts."
The woman, whose name was not released, was also found guilty of "distributing money" among the militants in Mosul. He didn't give more details on the charges and what years she cooperated with al-Qaida in Iraq.
Bayrkdar said the woman's husband was earlier also sentenced to death as a member of the al-Qaida leadership. Al-Baghdadi was killed in April 2010, along with Abu Ayyub al-Masri, another prominent al-Qaeda leader in Iraq, in a U.S.-Iraqi joint operation.
Today's statement by Bayrkdar initially said the convicted woman was the sister Abu Bakr al-Baghdadi, the reclusive leader of the Islamic State group, but the spokesman later issued a correction, saying she is Abu Omar al-Baghdadi's sister.
Al-Qaida in Iraq was the parent group from which IS emerged.
In mid-2014, IS controlled vast areas in northern and western Iraq, including Iraq's second-largest city of Mosul, which was under the militants' rule for more than three years.
Iraq declared victory over IS last December, after driving the militants from northern and central Iraq. Hundreds of women, including foreigners, were arrested in the sweep. Since then, Iraq's Central Criminal Court has issued number of sentences against IS women, ranging from years in prison to death by hanging.
IS leader Abu Bakr al-Baghdadi's whereabouts remain unknown. Rumors have surfaced on several occasions of his death and injuries in airstrikes and fighting in both Iraq and Syria, territories where IS had declared an Islamic "caliphate," though there was never anything to back them up.
He is believed to be in his mid-40s, and was seen in public only once when he declared himself the leader of IS from a historic mosque in Mosul, just a few weeks after IS captured the city in the summer of 2014, along with entire swaths of northern and western Iraq.
Since then, he has only released audio messages to his followers from time to time, urging them to keep on fighting.
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