Turkish warplanes bombed Kurdish rebel positions in northern Iraq on Wednesday and Thursday, Turkish officials say.
The news follows the killing of at least nine Turkish soldiers in a landmine explosion on Wednesday which was blamed on the rebels.
Correspondents say it was the deadliest attack on security forces in months.
The banned Kurdistan Workers Party (PKK) has been fighting for autonomy since 1984. The government has arrested 51 suspected members this month.
More than 40,000 people have died in the conflict over the last 25 years.
