Turkey says its warplanes have bombed Kurdish positions across the border in northern Iraq, following a deadly bomb attack in the Turkish capital.
The military said the jets struck the Haftanin area late on February 17, targeting a group of 60-70 rebels of the Kurdistan Workers Party (PKK).
Earlier, a vehicle full of explosives was detonated in Ankara as military buses were passing by, killing 28 people.
Prime Minister Ahmet Davutoglu said nine people were arrested in connection with the attack, which he said was carried out by the armed wing of the Syrian Kurdish PYD party in cooperation with PKK militants in Turkey.
A PKK official and the PYD head denied the allegations.
Also on February 18, security sources said a bomb killed at least six Turkish security force members travelling in a vehicle in the country's mainly Kurdish southeast.