What happened
Adnan Çolak was convicted of murdering elderly women in Turkey’s Artvin region during the early 1990s.
The investigation
Investigators connected attacks through geographic concentration, victim patterns and evidence gathered after his arrest.
What the courts or investigators concluded
He was convicted on multiple murder counts and initially received death sentences that were no longer carried out after Turkey abolished capital punishment.
Why the case remains significant
Çolak remains one of Turkey’s most notorious serial offenders, though responsible summaries should distinguish the number of killings proved in court from larger figures sometimes repeated in secondary accounts.
Case context
Crime by Region organizes cases geographically so readers can move from one file to other investigations from the same country. For unresolved or contested cases, the wording above reflects the distinction between confirmed events, investigative theories and findings actually established in court.