Counter-terrorism police conducted operations in 10 provinces across Turkey including Istanbul, Ankara and Şanlıurfa, and a number of detentions were reported.
The suspects included the former editor-in-chief of Daily Zaman Ekrem Dumanlı, the CEO of the Koza İpek group Akın İpek, and Fatih University rector Professor Şerif Ali Tekalan.
Forty-three of the suspects are reported to have been abroad when the police arrived to detain them.
Former AKP İzmir deputy İlhan İşbilen was also detained in Istanbul. İşbilen had served as the general manager of daily Zaman and Samanyolu TV, outlets known as being close to Gülen.