Ankara says it targeted PKK bases but Baghdad claims Kurdish villages were hit.
“Two PKK groups were spotted just across the border and it was determined that they were planning attacks and a battalion of soldiers intervened,” the military official told the Reuters news agency.
“The area they entered is a deserted area and there is no Iraqi force or peshmerga deployed there,” he said.
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A website linked to the political party of Jalal Talabani, the Iraqi president, said as many as 700 Turkish troops had gone as far as 8km into Iraq.
Fouad Hussein, head of the office of Kurdish regional president, Massoud Barzani, said: “We condemn this incursion.
“Turkey wants to transfer the problem on to the territory of Iraqi Kurdistan.”
Turkey says it has a right to use force to combat the estimated 3,000 separatists who shelter across the border northern Iraq.
Abdullah Gul, Turkey’s president, said on Tuesday that Ankara’s only goal was to target the PKK.
“There are no other goals. Iraq is Turkey’s neighbour and we want to save the Iraqis from this trouble of terror,” Gul was quoted as saying by state news agency Anatolian.
Turkish fighter jets bombed villages in northern Iraq over the weekend and the government in Baghdad complained that at least one civilian woman was killed.
The UN refugee agency said on Tuesday that Turkish bombardment had forced 1,800 people to leave their homes.
“The shelling is apparently ongoing and we don’t know if more people are displaced,” Astrid van Genderen Stor, UNHCR spokeswoman in Geneva, said. “Winter has set in and living conditions are very harsh.”