Turkish police raided three courthouses in Istanbul on Monday, searching for 173 people for whom detention warrants were issued in the latest wave of the post-coup crackdown.
Large units of police seized computers and documents during the raid, the Dogan news agency reported. Some people were also detained and taken to police stations, though an exact number was not available.
Thousands of judges and prosecutors have been suspended or fired after the failed coup, and many face additional judicial proceedings.
The government alleges that the coup was planned by US-based Islamic cleric Fethullah Gulen and his followers. He denies the charges.
Turkey has formally arrested more than 17,000 people since July 15, and more than 81,000 civil servants and soldiers have been suspended or fired.