AFP reports that President Erdogan continues to shut down opposition media, with Turkish police storming the Zaman newspaper office late Wednesday.
Riot police surrounded the building while officers and lawyers searched the Istanbul office. Zaman is accused of having links to Fethullah Gulen, a US-based preacher who President Erdogan accuses of plotting to overthrow his rule.
Wednesday's raid came after reports that Zaman was printing an underground newspaper for the Koza-Ipek conglomerate. Koza-Ipek's two media stations were raided during a live broadcast in October. The Turkish government seized the company as part of a probe into Gulen's involvement in Turkey.
Zaman said to AFP that the raid was a "threat to the free media".
The newspaper faced censorship last month as well, when Turkish police arrested the editor-in-chief of Zaman, for reportedly posting a series of tweets critical of Erdogan.
Zaman media group lawyers issued a declaration that the raid was "shameful."
The raid comes shortly before the G20 Summit, a meeting of the worlds' most powerful leaders in Antalya, Turkey on November 15-16.
Media rights organziations and international leaders have voiced multiple concerns about the intimidation of media and journalists in Turkey.