PKK fighters were to begin laying down their weapons at a ceremony in Iraqi Kurdistan Friday, two months after the Kurdish rebels ended their decades-long armed struggle against the Turkish state.

The disarmament ceremony marks a turning point in the transition of the Kurdistan Workers' Party (PKK) from armed insurgency to democratic politics, as part of a broader effort to draw a line under one of the region's longest-running conflicts.

Founded in the late 1970s by Abdullah Ocalan, the PKK took up arms in 1984, beginning a string of bloody attacks on Turkish soil that sparked a conflict that cost more than 40,000 lives.

But more than four decades on, the PKK in May announced its dissolution, saying it would pursue a democratic struggle to defend the rights of the Kurdish minority in line with a historic call by Ocalan, who has been serving a life sentence in Turkey since 1999.