At least five businessmen were detained as part of an investigation into the Gulen movement in Izmir, according to media.
State-run Anadolu news agency said Feb 20 the detention warrants were issued for 7 people for having funding intercultural dialog events organized by the Izmir Cultural Dialog Center (IZDIM).
Several academics, bureaucrats and businessmen living abroad earlier travelled to Izmir as part of IZDIM events, Anadolu said.
While 5 of the suspects were detained, the remaining two were reported to be abroad.
Those detained include Ismail Selim Doğanata, the owner of the Izmir University and Fatih College.
Both the two schools as well as IZDIM 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.