Drone airstrikes targeting suspected al-Qaida training camps in a rugged mountain region in southern Yemen have killed more than 30 militants over two days.
Yemeni security officials said at least 25 militants were killed Sunday, and 10 militants and three civilians were killed Saturday.
The officials did not identify who carried out the attacks.
The U.S. regularly carries out drone strikes in Yemen against the local al-Qaida branch, which Washington considers the most active in the world.
Yemen's branch of al-Qaida, also known as Al-Qaida in the Arabian Peninsula, is blamed for a number of unsuccessful bomb plots aimed at Americans. They include an attempt to bring down a U.S.-bound airliner with explosives hidden in the bomber's underwear and a second plot to send mail bombs hidden in the toner cartridges on planes headed to the U.S.