The detainees will be charged of "being a member and financing Fethullah Gulen terror organisation/parallel state structure", read a statement posted on the website of the Istanbul Anadolu chief public prosecutor office, according to Xinhua.
Of those detained, 41 were employees of Bank Asia which was run by Gulen but closed by police last year, the statement said.
It added that the prosecutors have issued arrest warrants against a total of 140 people including prominent businessmen.
Relations between Gulen and Tayyip Erdogan soured after Turkey's judiciary and police, allegedly under the former's control, launched a corruption probe into government officials in December 2013 including Erdogan and his family members.
Since then Erdogan and the ruling Justice and Development Party have been conducting a broad crackdown on Gulen and his supporters, accusing them of establishing a parallel state and a terrorist organisation. (IANS)