The members of the Kurdistan Workers' Party (PKK) raided the building site in a rural area of Sirvan in Siirt province late Thursday, the governor's office of Siirt said in a statement carried by Anatolia news agency.

The rebels abducted eight workers and then released four of them, the statement said.

"Moreover, terrorists sabotaged and burned 10 construction equipments. The (security) operations in the region are continuing without a break to find the workers and provide peace and security to the people," it said.

On Thursday, the PKK abducted two militiamen and two civilians as they were leaving a wedding party in Sirnak province.

In August rebels captured a Turkish soldier and a local official in Diyarbakir province, the regional capital of the mainly Kurdish southeast. In July they abducted two soldiers and a health worker near Diyarbakir.

The PKK, listed as a terrorist organisation by Turkey and much of the international community, took up arms for Kurdish self-rule in the southeast in 1984, sparking a conflict that has claimed some 45,000 lives.