ANKARA, Turkey (AP) — Turkish warplanes struck Kurdish rebels positions in southeast Turkey, the military said Tuesday, a day after heavy violence in the country left at least nine dead.

In a statement, the Turkish military said jets overnight hit 17 targets of the Kurdistan Workers' Party, or PKK, around the Buzul mountain and the Ikiyaka region in Hakkari province, which borders Iran and Iraq.

In further violence Tuesday, Kurdish rebels attacked an infantry brigade command in nearby Sirnak province, seriously wounding a soldier who later died in hospital.

On Monday, nine people, including five police officers, were killed in separate attacks in Istanbul and in the southeastern Sirnak province. The attacks were blamed on the PKK.

Turkey has seen a sharp spike in clashes between security forces and Kurdish rebels in recent weeks. At least 48 people have died during the renewed violence that has wrecked an already fragile peace process with the Kurds.

Turkish warplanes have raided PKK targets in Iraq and in southeast Turkey in tandem with airstrikes against Islamic State militants in Syria since late July.

The PKK has been fighting for Kurdish autonomy in southeast Turkey. The conflict has killed tens of thousands of people since 1984.