"Turkey assumes all its responsibilities in the fight against terrorism" and supported Iraq in this regard, said a foreign ministry statement, which said Ankara expected the same from Baghdad.

Turkey's defence ministry on Thursday said it had carried out airstrikes against PKK positions in northern Iraq, hitting tunnels and shelters in the Sinjar and Mount Karajak regions.

The PKK has waged a three-and-a-half decade insurgency against the Turkish state seeking independence, and more recently autonomy, for Turkey's Kurdish minority, that has claimed tens of thousands of lives.