Turkish police detained 15 suspects in an operation targeting the Daesh terrorist group in Istanbul, authorities said Thursday.

The operation was carried out by counterterrorism and intelligence units under the coordination of the Istanbul Chief Public Prosecutor’s Office as part of an investigation into the group’s financing network.

Authorities identified suspects allegedly linked to Daesh who were accused of spreading propaganda through social media platforms. Following surveillance and intelligence work, police conducted simultaneous raids at multiple addresses across the city.

All 15 suspects were taken into custody and transferred to police headquarters for questioning. The investigation remains ongoing.

On the other hand, security sources said on Wednesday that the National Intelligence Organization (MIT) captured Daesh operative Ahmet Kazancı “in the border area.