The PKK, which has waged a bloody 26-year campaign for Kurdish self-rule in southeast Turkey, will consider an open-ended ceasefire if Ankara displays commitment to a peaceful solution of the conflict, commander Murat Karayilan said.

"It is obvious that the process will turn into an indefinite ceasefire if efforts boosting mutual confidence take place in the coming month. Otherwise, we will reconsider it," Firat quoted Karayilan as saying.

Kralayilan hailed "the dialogue process that the (Turkish) state has developed" with jailed PKK leader Abdullah Ocalan, adding that the truce's extension was decided following a message the rebel chieftain sent from prison.

The truce dates from August 13 and the extension was expected to run from late September.