"Three of our members were martyred in the Bahdinan region in the first days of the bombing," last Wednesday, said Ahmed Denis, Kurdistan Workers' Party (PKK) spokesman, referring to an area of Dohuk province in northern Iraq's autonomous Kurdistan region.

"If Turkey continues these attacks ... then we will announce our decision to enter into war with Turkey," he said.

Denis had said earlier on Monday that Turkish aircraft bombed the Kortek area in Sulaimaniyah province, Qandil in Arbil province, and Jabal Mattine in Dohuk, from about midday to 3:00 pm (1200 GMT).

He also said Turkish forces could be making preparations to enter Iraq and that the PKK was also preparing for possible ground fighting.

The Monday bombing comes a day after an Iraqi family of seven were killed in a Turkish strike on a vehicle in Kortek, according to Jabbar Yawar, a top Iraqi Kurdish official.

The Turkish military launched a first wave of bomb attacks on August 17 against PKK targets in Iraq after a rebel attack against a military unit in Cukurca, southeast Turkey, that killed nine security personnel.

The PKK, listed as a terrorist group by Ankara and much of the international community, took up arms in Kurdish-majority southeast Turkey in 1984, sparking a conflict that has claimed about 45,000 lives.