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Two civilians were killed Sunday in Iraq's northern Kurdistan region by a Turkish army bombardment as forces battled the (PKK) rebels, local officials said.

regularly targets northwest Iraq in operations against the PKK, which considers a terrorist organisation.

The Kurdish separatists have waged a decades-long insurgency against Turkey, and maintain bases in the rugged mountains across the border in Iraq.

The latest violence comes six days before a in Baghdad.

The Iraqi civilians were killed in Iraq's Zakho district, an area bordering Turkey, said local mayor Farhad Mahmoud.

"They had gone to an area where it is advised not to go," Mahmoud said, adding that they were not from the area, but had been visiting from the city of Mosul. "They were caught in a Turkish bombing and died."

PKK fighters said clashes were ongoing Sunday.

Turkey has installed around a dozen military bases over the past 25 years in Iraq's autonomous Kurdish region, and it launched a new cross-border offensive in April against the PKK, consisting of both aerial and ground attacks.

of dozens of villages in the area have fled the conflict.

On Tuesday, eight people died in a in northern Iraq's region.

Repeated Turkish raids have stoked tensions with Baghdad, but President Recep Tayyip Erdogan has warned that his country will "deal with" the PKK presence if Iraq is unable to do so.

On Wednesday, Iraq's national security council condemned "unilateral military actions" and rejected "the use of Iraqi land for settling scores", but did not specifically mention Turkey.

Ankara is one of Baghdad's key trading partners, and Erdogan has been invited to next week's regional summit in Baghdad.

But it is not known if Erdogan will attend, or if Turkish operations in Iraq will be discussed.

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