Fifty-three people were detained in the western province of Izmir on Saturday while 22 others were placed in pre-trial detention as part of an Istanbul-based investigation into the Gülen movement.
The Turkish government accuses the movement of being behind a July 15 coup attempt, while the movement denies any involvement.
Operations by law enforcement to round up people with alleged or real ties to the movement are still continuing nine months after the failed coup. Critics often lambaste the government for abusing the post-coup emergency rule.
Detention warrants were issued for 76 suspects in Istanbul, and police had located 53 of them as of Saturday. Most of the detainees were apprehended in the early hours of the day.
Meanwhile, an Izmir court ruled for the arrest of 22 people who had been detained in several districts of the province on April 19.
The Turkish government has arrested nearly 50,000 individuals since July 15.