A Turkish F-16 fighter jet takes off from Incirlik airbase in the southern city of Adana, Turkey, July 27, 2015. ? Reuters FILE

ISTANBUL: Turkish warplanes hit Kurdistan Workers Party (PKK) targets in northern Iraq on Monday and killed 29 of the group?s militants, Turkey?s armed forces said.

The PKK fighters were believed to be preparing an attack on Turkish border posts from the Hakurk and Metina regions of northern Iraq, the army said in a written statement.

Several caves and shelters used by the militants were destroyed in the air strikes, it said.

The PKK, which has been waging an insurgency in southeast Turkey since the 1980s, is designated a terrorist group by Turkey, the United States and the European Union.

The conflict has claimed lives of more than 40,000 people.