Turkey attacked Kurdish militant targets in northern Iraq in an air and land operation that targeted camps and ammunition stores, Turkey's defense ministry said on Monday.

The military action was part of a long-running Turkish campaign in Iraq and Syria against militants of the Kurdistan Workers Party (PKK) and the Syrian Kurdish YPG militia, both regarded as terrorist groups by Ankara.

Alongside the air operation, commandos and special forces also participated, both by land and air.

"Our operation is continuing successfully as planned," the state-owned Anadolu news agency quoted Defense Minister Hulusi Akar as saying. "The targets identified in the first phase have been captured."

Artillery also fired on militant targets in the military action, it said. No information on casualties was given.

The action, called "Operation Claw Lock", aimed to "prevent terror attacks" and ensure border security following an assessment that the PKK was planning a large-scale attack, the ministry added.

Turkey regularly launches air strikes into northern Iraq, a region into which it has repeatedly sent commandos, to support its offensives.

The PKK took up arms against the Turkish state in 1984. More than 40,000 people have been killed in the conflict, which in the past was mainly focused in southeast Turkey.

Iran also has armed Kurdish opposition in Iraq, although they separate from the PKK, which mainly operated Turkey and Iraq.