Yemeni officials say the death toll from an Islamic State-claimed bombing attack at a mosque in the capital has risen to 28.

The Health Ministry in Sanaa, controlled by Shiite rebels who seized the capital nearly a year ago, provided the updated toll in a statement Thursday. It says dozens more were injured in Wednesday's bombing.

Yemen has been mired in violence for months, as an array of forces has tried to push the rebels back with the aid of Saudi-led airstrikes.

An IS affiliate claimed the bombing in a statement circulated online, calling it an attack on the rebels, known as Houthis.

Officials had initially said at least 20 people were killed in the attack, which involved a suicide bomber and a car bomb.