At least six people were put in pre-trial detention as part of an investigation into the Gulen movement in Izmir, according to media.
State-run Anadolu news agency said Thursday that six people are accused of membership to the movement. Arrestees include Ali Rıza Doğanata, one of the owners of the Izmir University and Fatih College.
Both of the schools were earlier shuttered over links to the Gulen movement.
Turkish government accuses the movement of masterminding the July 15, 2016 failed coup while the latter denies involvement. More than 150,000 people have passed through police custody and 90,000 were put in pre-trial detention since the summer of 2016. Over 3,000 education institutions, among them are universities, dormitories and prep school, were closed down.