At least 29 people attending Eid prayers were killed Thursday when a bomb went off inside a crowded mosque in the Yemeni capital.
Officials fear the death toll from the attack at the Al Bilaili in Sanaa will rise because dozens of worshipers suffered severe injuries.
No one immediately claimed responsibility for the attack.
Video taken after the attack showed the power of the blast.
Blood on the carpet
Rubble covered the streets. A hole was blown through what appeared to be a thick cement wall. Bits of stone and plaster littered the prayer floor inside the mosque.
Bood appeared to have stained the carpet where the faithful would have been praying. And shoes, which Muslims take off before entering a mosque, remained unclaimed outside.
The attack is the sixth in three months in which a mosque has been targeted.
The early morning prayer service was meant to mark the beginning of Eid al-Adha, which commemorates the prophet Abraham’s willingness to sacrifice his son for God. The holiday is one of two major ones in Islam.