http://www.adlisicil.adalet.gov.tr/en/abroad_app.html
Application From Abroad
Requests for police certificates of Turkish citizens living abroad and of foreign citizens who have stayed in Turkey should be made directly by the persons concerned via Turkish Consulates located in the country of living or staying. Applicants should write a petition, sign it, enclose the copy of a valid idendity card. Police certificates can be prepared in three languages; English, German, French. Please state the language of the certificate you prefer in your petition.