Five people have been killed in an apparent terror attack in Turkey at the headquarters of a defence and aerospace company. Turkey has blamed Kurdish militant group the PKK for the attack and has launched strikes on its sites in Syria and Iraq.

Turkey launched airstrikes against what it said were sites linked to a Kurdish separatist group in Iraq and Syria, hours after an armed assault on a defense company killed five people in Ankara.

No group immediately claimed responsibility. Turkey’s interior minister said it was “most likely carried out” by the Kurdistan Workers’ Party, or PKK.