The service, the SBU, said in a Facebook statement Friday that Shishani, a Georgian national, was apprehended near the Ukrainian capital Kiyv. The CIA and the Georgian police participated in the operation, it said.
Since 2012, Shishani had served as a deputy to Abu Omar al-Shishani, the "minister of war" in IS, who was declared dead in 2016.
In 2016, Al Bar Shishani fled to Turkey, and in 2018 arrived in Ukraine, using a fake passport, the SBU said.
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