Three soldiers were wounded Monday in a bomb attack by militants of the outlawed Kurdish Workers' Party (PKK) in southeastern Turkey, private Dogan news agency reported. The bomb, planted by two PKK militants, targetted a minibus carrying soldiers in Siverek, a town in Sanliurfa province, the report said. The attackers fled the scene soon after the explosion, Dogan said. Since a cease-fire between the government and the PKK collapsed last July, Turkish security forces have been conducting a major campaign against the group in the southeast of the country. Turkish President Recep Tayyip Erdogan said earlier that more than 300 Turkish soldiers have been killed in anti-PKK operations. He said the number of PKK militants killed were 10 times of the military casualties.