At least 60 PKK militants were killed in the strikes, carried out by 21 Turkish F-16 and F-4 warplanes, the state-run Anatolia news agency reported, quoting security sources.

The toll could not be verified independently.

The strikes, which ran from late Thursday to dawn Friday, are the latest in a relentless air campaign aimed at crippling the PKK, which has staged a string of attacks in Turkey in recent weeks.