As part of a post-coup crackdown targeting followers of the faith-based Gülen movement, Turkish police in Antalya province on Sunday detained 27 people who were accused of visiting families whose members were recently released from jail, the Kronos news website reported.
The suspects were also accused of renting houses for people hiding from prosecution.
Twelve of the detainees were sought by prosecutors for alleged membership in the Gülen movement.
The Turkish government accuses the movement of orchestrating a 2016 coup attempt, although it denies any involvement.
On Monday the İstanbul Chief Public Prosecutor’s Office ordered the detention of 57 people over Gülen links.
The suspects were accused of using ByLock, a smartphone application that prosecutors in Turkey believe was used among members of the Gülen network.
Police raided houses in 14 provinces, detaining 20 suspects, according to the state-run Anadolu news agency.
Turkey has dismissed some 140,000 public servants by government decrees on allegations of Gülen links, and more than 600,000 people have been investigated on terrorism charges since the foiled coup.