After the 1999 capture of the group's leader, Abdullah Ocalan, the militants are thought to have shifted their bases to areas outside Turkey, and mainly in the mountains of northern Iraq.
Nakon uhićenja čelnika skupine Abdullaha Ocalana 1999. godine, militanti su, kako se smatra, prebacili svoje baze u područja izvan Turske, uglavnom u planinska područja sjevernog Iraka.