Turkish police detained four businessmen from Boydak Holding on Friday over allegations of financing the “parallel state,” also known by the Turkish government as the Gulenist Terror Organisation (FETO).
Executive Board Chairman Haci Boydak, and executives Memduh Boydak, Murat Bozdag and Erol Boydak were detained on Friday morning in the central province of Kayseri.
Officers started searching the suspects’ houses as well as the company's headquarters.
FETO, led by Fethullah Gulen - a US based preacher of Turkish origin- is accused by the Turkish government of establishing and leading a “parallel state,” composed of a network of followers who have allegedly infiltrated the judiciary, police force, and other state agencies to control these institutions.
Memduh Boydak was previously detained in September in an operation targeting FETO.
Meanwhile, trustees was appointed at the request of an Istanbul prosecutor to replace the management of Zaman newspaper which has links to US-based cleric Fethullah Gulen.
Previously, police raids also targeted Gulen-affiliated conglomerates; including, Koza Ipek Holding and Kaynak Holding, both high profile Turkish companies.
Since early 2014, investigations into the parallel state have seen hundreds of suspects, including police and public prosecutors, arrested or reassigned.
An arrest warrant has been issued for Fethullah Gulen, in absentia, for "attempting to stage a coup, establishing and masterminding an armed organisation and political espionage” in Turkey.
An upcoming hearing will be held in April 2016.