The attacks began at 3 am (midnight GMT) and continued sporadically during the day, said PKK spokesman Ahmed Danis. He said there were no casualties.

The strikes come after Turkish army launched a wave of attacks last month against Kurdish rebels in the Zap region of northern Iraq.

Wednesday's strikes were focused on the Bazger valley in the Sidikan area, located in Arbil district, Danis said.

The PKK, listed as a terrorist group by Ankara and much of the international community, has been fighting for self-rule in Kurdish-majority southeastern Turkey since 1984 in a conflict that has claimed more than 37,000 lives.

Ankara estimates that there are some 4,000 PKK rebels taking refuge in Iraq's northern Kurdish area, where there has been an autonomous regional government since the early 1990s.