The case of Gülistan Doku, who went missing in Tunceli, eastern Türkiye, in January 2020, has remained unresolved for more than six years despite extensive search and investigation efforts.
Doku, a 21-year-old university student, was last seen on Jan. 5, 2020, near the Sarısaltuk Viaduct in Tunceli. Search teams conducted extensive operations to locate her, but her whereabouts remained unknown.
A new development emerged after Umut Altaş, a suspect wanted in connection with the investigation and detained in the U.S., was questioned by the FBI under Türkiye’s judicial assistance request.
Altaş was questioned by FBI and U.S. Homeland Security Investigations officials on Aug. 19 and 20 at the Moshannon Valley Processing Center in Pennsylvania. Turkish authorities had prepared 109 questions for the interview.
The FBI subsequently prepared a 34-page report dated Aug. 26 and sent it to Turkish authorities through the Turkish Justice Ministry’s Directorate General for Foreign Relations and European Union Affairs.
