A further 200 people were injured during the attack, the Houthis reported.
Earlier reports say at least 55 people were killed instantly when the two bombs, targeting the mosques went off on Friday, according to a medical source has said.
The two blasts struck the Badr and Al-Hashoush mosques frequented by supporters of the Shia Houthi militants, according to an Anadolu Agency reporter.
A Yemeni security official, speaking on condition of anonymity, suggested that the twin blasts might have been carried out by suicide bombers.
This is the first time for political violence to reach mosques in Sanaa since it was seized by the Houthis last September.
No group has claimed responsibility for the blasts.
SOURCE: MiddleEast Monitor