Clashes between Turkish troops and Kurdish rebels have left three soldiers dead and 10 wounded in the country's southeast, a news agency reported Monday.

The clashes took place over the past four days in the southeastern province of Sirnak, bordering Iraq, Dogan news agency said. Dogan agency said there were Kurdish rebel casualties but did not provide further details.

The fighting reportedly coincided with an attack by Turkish artillery units and warplanes against Kurdish rebel positions in northern Iraq late last week that killed at least 15 rebels, according to a statement from Turkey's military on Saturday.

Turkey is fighting the Kurdistan Workers' Party or PKK, which uses bases in the north of neighboring Iraq to launch attacks against targets inside Turkey.

Turkey, like the EU and the U.S., considers the PKK a terrorist organization.

Saturday's statement confirmed the first cross-border action by the military since its eight-day ground incursion, which ended Feb. 29. The U.S. has been sharing intelligence on the rebels with NATO-ally Turkey since November.

The PKK took up arms against the government in 1984, and tens of thousands of people have been killed in the fighting.