Turkey's state-run news agency says Turkish jets have raided suspected Kurdish rebel targets across the border in northern Iraq, following a wave of attacks that killed at least 12 people.

The Anadolu Agency said Thursday the Turkish warplanes attacked rebels of the Kurdistan Workers' Party, or PKK, in the Sinath-Haftanin region of northern Iraq, citing unnamed security sources.

The agency said the raid was carried out Wednesday hours after Turkish military vehicles were attacked near the border with Iraq, killing four soldiers. Eight other people were also killed in southeast Turkey in simultaneous bomb attacks targeting police vehicles.

Clashes between the PKK and Turkey's security forces resumed last year after a fragile peace process collapsed. Since then Turkish jets have frequently raided PKK targets in cross-border operations.