As many as 50 Turkish fighter jets were involved in the airstrikes Sunday in the Qandil mountains of northern Iraq in the biggest attack against Turkish Kurd rebels in years, Turkish media said. An Iraqi official said the planes attacked several villages, killing one woman. The rebels said two civilians and five rebels died.

"We condemn this outrageous attack on Iraq's sovereignty," Iraq's parliament said in a statement.

Turkey said the attack was aimed at rebels of the Kurdistan Workers' Party, or PKK, and that U.S. intelligence had been used in the bombing. The PKK has battled for autonomy for southeastern Turkey for more than two decades and uses strongholds in northern Iraq for cross-border strikes.