Turkish warplanes attacked Kurdistan Workers Party (PKK) targets in southeast Turkey late Monday.

The airstrikes, which came amid debate over the defense of the Syrian Kurdish center of Kobane against the Islamic State, were the first significant operations since the launch of a peace process two years ago.

The airstrikes caused “major damage” to the PKK, according to the Turkish daily Hurriyet.

The Turkish General Staff ordered the bombing of the PKK positions in Hakkari Province near the Iraqi border late Monday.

The warplanes struck after three days of PKK attacks on a military outpost, the paper said. The targets were also allegedly involved in “assassination, armed incidents, and attacks on security bases” after last week’s nationwide protests over Kobane, in which 37 people were killed in fighting with security forces and between the PKK and the Free Cause Party (Huda Par).

Hurriyet said the attacks were carried out with the knowledge of Turkish Prime Minister Ahmet Davutoglu.