Two car bombs exploded Tuesday south of the Yemeni capital, hitting a school bus that was traveling near a Shi'ite rebel gathering and killing 25 people, including at least 15 students.
Sources say the attack in the Rada area of the central province of al-Bayda targeted the home of a leader of the Shi'ite rebels, known as the Houthis.
The sources blamed the attack on al-Qaida militants.
It is not clear if the other 10 people killed in the attack were rebel fighters.
Rada is a bastion of al-Qaida's affiliate in Yemen, al-Qaida in the Arabian Peninsula. The Houthis and al-Qaida have engaged in fierce fighting in Rada in recent months.
Also Tuesday, Shi'ite rebel gunmen prevented Yemen's new military chief from entering the Defense Ministry in the capital, Sana'a. The Houthis seized control of Sana'a a few months ago to little resistance from the weak Yemen central government led by President Abed Rabbo Mansour Hadi.
The Houthis rise to power has angered al-Qaida in the Arabian Peninsula, which accuses them of being supported by Iran.
