Saad Pira said the shells hit Iraqi territory at Sidakan, north of the city of Irbil.
The guerrillas were reportedly members of the militant Kurdistan Independent Life Party (PJAK). There was no word on casualties.
Iraq's Kurdish Region
KURDISH AWAKENING: The ethnic Kurdish region in the northern part of Iraq has struggled in recent years to reestablish its cultural and political identity after decades of oppression under the regime of deposed Iraqi President Saddam Hussein. In December, RFE/RL correspondent Charles Recknagel traveled to this area and filed several reports: