According to state news agency Anadolu, the security forces held simultaneous raids in 12 districts of Istanbul to arrest 16 foreigners, who are believed to have been active in Syria and Iraq.
The source added that digital materials and organizational documents were seized during the operation.
Daesh became globally known in 2014, when it declared itself a worldwide caliphate and began military operations in Iraq and Syria, as well as in other areas in the Middle East. The group has since been eliminated from most of the territories previously occupied but it is still able to carry out sporadic terrorist attacks.
* Daesh (also known as ISIS/ISIL/IS/Islamic State) is a terrorist group banned in Russia and many other countries