Turkish police have made at least 23 arrests during raids on a newspaper and TV station with close ties to US-based Islamic cleric Fethullah Gulen.

Those detained are accused of forming an illegal organisation and trying to seize control of the state.

Mr Gulen, the spiritual leader of the Hizmet movement, is a rival of Turkish President Recep Tayyip Erdogan.

The raids come days after Mr Erdogan pledged a fresh campaign against Mr Gulen’s supporters.

Among those arrested are journalists, producers, scriptwriters and a police chief in eastern Turkey.