A total of 110 people were brought before the court as part of a FETO investigation run by the Istanbul Public Prosecutor’s office.
Among the 60 suspects remanded were the brother and son of the former head of a major Turkish company called Boydak Holding.
The remaining 50 people put on remand face charges of being members of FETO and of providing financial support to the banned network.
The court also released the remaining 50 businesspeople but imposed travel bans on them.
On Jan. 5, the Istanbul Public Prosecutor’s office issued detention orders for 380 business figures accused of providing financial support to the terror network, led by U.S.-based Fetullah Gulen.
The Istanbul Police Department had launched simultaneous operations across 35 cities to apprehend the suspects and detained 164 people. Fifty-four were later released earlier under judicial control.
Some 110 suspects are known to be abroad.
Turkey survived a deadly coup attempt on July 15 last year, launched by rogue elements within the military that martyred more than 230 people and injured nearly 2,200 others.
According to Turkey’s government, Gulen and his FETO terror network organized the attempted coup.
Ankara has also said FETO is behind a long-running campaign to overthrow the state through the infiltration of Turkish institutions, particularly the military, police and judiciary.
In the wake of the July coup attempt, tens of thousands of FETO suspects have been arrested, including many in the armed forces, police, justice system and the education sector.