PH
The explosion, which occurred early on Thursday, ripped through the Balili mosque near a police academy in Sana’a, which is controlled by the Shia Houthi rebels.
There were reports suggesting that the attack was carried out by two suicide bombers.
The number of dead and wounded was not immediately known.
Sana’a has witnessed a string of bombings of Shia mosques in recent months claimed by the Islamic State of Iraq and the Levant (ISIL) group that considers Shia muslims to be heretics.
The Houthi rebels have seized several regions of Yemen, including Sana’a, which they took a year ago.
A coalition of Arab states led by Saudi Arabia, which supports the government that was forced into exile by the rebels, have started air strikes against the Houthis in March and recently managed to re-capture some southern provinces, including Yemen’s second city of Aden.
Exiled President Abd-Rabbu Mansour Hadi returned to Aden on Tuesday.
