Turkish warplanes on Thursday attacked new Kurdistan Workers' Party (PKK) targets in north Iraq following a recent historic ceasefire announced by jailed PKK leader Abdullah Ocalan. The NTV news network quoted Turkish military sources as saying that missiles were fired by Turkish planes at PKK targets in north Iraq with a view to preventing PKK rebels from entering Turkey. The Turkish air strike caused no casualties, it pointed out. It is the first attack by the Turkish army against PKK targets following the call by the PKK leader for his followers to stop fighting Turkish forces and withdraw from Turkish territories. The jailed leader of the Kurdistan Workers' Party (PKK) Abdullah Ocalan had announced much-expected ceasefire to end the 28-year conflict between the PKK and Ankara. The Turkish government welcomed the historic truce call but nevertheless said it wanted to see action as well as words. Ankara and the PKK have been engaged in talks in a bid to end nearly three decades of conflict. The Kurdistan Workers' Party has been fighting for self-rule for Kurds in southeastern Turkey.