On May 15, 54 suspects were detained by the Istanbul Police Department’s Counter-Terrorism Unit teams, which had conducted a major operation against ISIS, Turkish newspaper Hürriyet reported.
The raids of 19 locations in 13 districts in Istanbul resulted in the massive arrest of persons allegedly affiliated to ISIS.
From the beginning of 2018 a series of detentions has been carried out in Turkey.
On February 2, Turkish police arrested 82 ISIS suspects during an operation in Istanbul. The supposed members of ISIS were preparing a terrorist act in the city.
On February 4, 423 suspected members of ISIS were detained in the nationwide anti-terror raids in Turkey. 150 suspects were in Sanliurfa in the south-east and 47 in Gaziantep, which is close to the Syrian border. 60 suspects were detained in four districts of Ankara. Dozens more were arrested in provinces of Bursa. In the Aegean region, 9 people suspected of travelling to and from Syria and planning attacks were detained. 18 were detained in Istanbul and the neighbouring province of Kocaeli.
On March 5, 16 ISIS suspects were detained in Ankara.
On March 7, 13 ISIS suspects were arrested by Turkish security forces in Adana. 12 of the detained were Syrian nationals.
On March 23, 14 suspects were arrested in Istanbul over alleged links to ISIS.
On April 16, Turkish counter-terrorism police detained 4 foreign nationals as part of an operation against ISIS in the western province of Sakarya.
On April 27, an associate to ISIS leader Abu Bakr al-Baghdadi and 3 other ISIS suspects, were caught in the western Turkish province of İzmir in a cooperation of the police and national intelligence organization. Furthermore, 14 people were detained in an anti-ISIS operation in the southeastern province of Gaziantep. The arrested persons were accused of spreading ISIS propaganda in social media.
On April 29, Adana police detained 10 ISIS suspects.
On April 30, security forces jailed 6 suspected ISIS members in Ankara and the southern province of Adana.
On May 1, police arrested 9 ISIS suspects during an anti-terror operation in the Central Anatolian province of Konya as they had been accused of making propaganda for ISIS on social media.
On May 3, police arrested 6 ISIS suspects in the southern province of Adana and the Central Anatolian province of Kayseri.
According to the state-run Turkish Anadolu Agency, 1,447 people, including foreigners, were detained in 2017 in Istanbul for their suspected links to ISIS. The Istanbul Police Department’s Counter-Terrorism Unit teams conducted 58 operations against the terrorist group in 2017.