The long-awaited third visit, which was approved by the justice ministry on Wednesday, comes as Ankara seeks to reset ties with Ocalan's Kurdistan Workers' Party (PKK), which has fought a decades-long insurgency against the Turkish state.

Since late December, Ocalan -- who is serving life without parole on Imrali prison island near Istanbul -- has been twice visited by two DEM lawmakers who then briefed the parliamentary parties on the content of their talks.

Thursday's visit comes as anticipation builds that Ocalan will very soon issue a public call to his fighters to lay down their arms.

This time, the delegation will include seven people, among them one of Ocalan's lawyers, Faik Ozgur Erol.

The last time he met one of his legal team was in 2019.

Also joining are DEM co-chairs Tulay Hatimogullari and Tuncer Bakirhan and veteran Kurdish politician Ahmet Turk, 82, a veteran Kurdish politician with a long history of involvement in efforts to resolve the Kurdish issue.

Deputy speaker Sirri Sureyya Onder and lawmaker Pervin Buldan, who were both part of the earlier delegations, will also go, as will another DEM lawmaker.

The conflict, which erupted in 1984, has since cost more than 40,000 lives, with a previous round of peace talks collapsing in a storm of violence in 2015.

Since then, all contacts were cut until October when the leader of the hardline nationalist MHP, who is close to President Recep Tayyip Erdogan, offered Ocalan an olive branch if he would reject violence.

Although Ocalan's statement is eagerly awaited, it remains unclear how or when it will be made, with the technicalities to be addressed during the visit, the party said.

"How the call will be made, whether there will be a call or not, the answer to all these questions depends on tomorrow's meeting," the spokesman said.

The delegation is planning to hold a news conference in Ankara on Friday to offer details about the talks, he added.