Turkish police have raided a newspaper and TV station close to a US-based Islamic cleric, Fethullah Gulen.
There were raids across Turkey and at least 14 people were arrested, Turkish media reported.
Mr Gulen is a rival of Turkish President Recep Tayyip Erdogan. His Hizmet movement has millions of supporters.
The latest move comes days after President Erdogan pledged a fresh campaign against Mr Gulen’s supporters.
Those detained include journalists, producers, scriptwriters and a police chief in eastern Turkey.
They have been charged with conspiracy and a plot to fabricate evidence
Police raided the offices of the Zaman newspaper in the early hours of Sunday. A crowd of protestors forced police to turn back before they could make arrests.
Staff at the paper reported on the incident as it happened.
The paper’s editor-in-chief tweeted a picture of himself at his desk, saying: “Officers [forced] back because of democratic reaction of my friends. I am at my place and wait.”