At least 35 militants have been killed and several more injured in air strikes and clashes with Pakistani troops in the Kurram and Orakzai tribal regions in the country's northwest, officials said.
Security forces launched an operation against militants in parts of Kurram and Orakzai Agencies after rebels attacked several security check points.
Troops backed by gunship helicopters targeted militant positions and hideouts at several places along the border with Afghanistan, the officials said.
The militants were killed in air strikes and clashes over the past two days.
Twenty-five militants were killed in Kurram Agency and 10 in Orakzai Agency.