A total of 52 businessmen were taken into custody as part of an investigation into the Gülen movement, which the government accuses of masterminding the July 15 coup attempt, on Thursday.
Detention warrants were issued for 87 people who are alleged to have ties with Izmir-based business associations that had been earlier closed under post-coup emergency rule. Police carried out operations Izmir, Istanbul, Iğdır, Muğla and Kütahya, detaining 52 so far.
According to pro-government Sabah daily, suspects also included two owners of the Boyumar grocery store chain.
Turkey survived a military coup attempt on July 15 that killed over 240 people and wounded more than a thousand others. Immediately after the putsch, the government along with President Recep Tayyip Erdoğan pinned the blame on the Gülen movement.
The movement denies any involvement.
More than 115,000 people have been purged from state bodies, nearly 80,000 detained and some 40,000 arrested since the coup attempt. Arrestees included journalists, judges, prosecutors, police and military officers, academics, governors and even a comedian. Critics argue that lists of Gülen sympathizers were arranged prior to the coup attempt.