The spokesman confirmed receiving "a call (from the justice ministry), there will be a visit tomorrow (Saturday) or Sunday as long as the weather is not bad".

Ocalan founded the PKK, or Kurdistan Workers' Party, which has waged a decades-long insurgency against Turkey and is considered a terror organisation by Ankara and its Western allies.

He was arrested in 1999 and has since been serving life without parole on the Turkish prison island of Imrali off the coast of Istanbul.

Turkey's private NTV television quoted Justice Minister Yilmaz Tunc as saying the ministry had "responded positively to the DEM party's request for a meeting" with two party lawmakers approved for the visit.

The move comes two months after the head of Turkey's far-right MHP party extended Ocalan a shock olive branch, inviting him to parliament to renounce terror and disband his group, a move backed by President Recep Tayyip Erdogan.

A day later, Ocalan was allowed his first family visit since March 2020.

In the following weeks, DEM applied to the justice ministry for permission to visit Ocalan.