A car bomb attack on a military station has killed at least eight soldiers in the Hakkari province of southeast Turkey, according to state media.

Sunday’s attack in the Semdinli district also resulted in at least five injuries, Turkey’s Anadolu news agency reported, citing a statement by the Turkish armed forces.

Ambulances were sent to the area, Reuters news agency reported.

Anadolu attributed the attack to the PKK, or the Kurdistan Workers Party, designated a “terrorist” group by Turkey.

PKK fighters are active in the mountainous area near the border with Iraq and Iran in Hakkari.

Turkey has been rocked by a wave of bomb attacks since last summer that have killed hundreds of people and been blamed on either the PKK or the Islamic State of Iraq and the Levant group (ISIL, also known as ISIS).

Fighting between the PKK and state security forces resumed last year after the collapse of a fragile two-and-a-half-year ceasefire.

Since then, more than 600 Turkish security personnel and thousands of PKK fighters have been killed, according to Anadolu.