Turkish troops continued to pursue Kurdish rebels in northern Iraq, but at a cost.
The Turkish military said Sunday that eight more of its soldiers have died in combat, raising the death toll to 15.
Kurdish rebels claim they have killed 47 Turkish soldiers so far, while the Turkish military claims to have killed 112 fighters for the Kurdistan Workers Party (PKK).
The PKK claims only two rebels have been killed and eight wounded since the incursion began Thursday.
The fighting is taking place in remote areas in northern Iraq and casualty totals are very difficult to independently verify.
The PKK claimed to shoot down a Turkish military helicopter on Saturday. Turkey would only say that a helicopter went down. It's not clear if the eight new deaths are associated with the helicopter.
The Turks are also using F-16 jets, artillery and armoured personnel carriers in the operation.
This is the first Turkish incursion into Iraq since the U.S.-led invasion of 2003.
Turkey is a member of NATO, and the U.S. backs its military actions agaisnt the PKK. Turkey has assured the U.S.-backed Iraqi government that it will limit its attacks to rebels.
Iraq's government has still criticized the operation.
"We know the threats that Turkey is facing but military operations will not solve the PKK problem. Turkey has resorted to military options, but this never resulted in a good thing," Iraqi government spokesman Ali al-Dabbagh said.
The office of Iraqi Shiite cleric Muqtada al-Sadr demanded Turkish forces withdraw from northern Iraq and advised negotiations instead.
"We demand that the Turkish government withdraw its forces immediately from the Iraqi territory and rely on negotiations to solve this conflict," al-Sadr's political committee said in a statement issued Sunday.
"We call upon the Muslim neighbor Turkey through its Prime Minister Recep Tayyip Erdogan and its Muslim people to be an element of peace and security in the region."
The U.S. and European Union consider the PKK a terrorist organization.
The PKK is fighting for a Kurdish homeland in southeastern Turkey. They began their insurgency in 1984. Since then, about 40,000 have died.
With files from The Associated Press
