The bombers detonated explosives at the two mosques controlled by the Shia Houthi group, the official said on condition of anonymity, adding that most of the dead were supporters of the Houthi group.

The first attack hit the congregation at Badr mosque in southeastern Sanaa, killing 35 people, while the second bombing occurred at Hashoush mosque in the northeastern area of the city, killing at least 20 others,  he said.

The Shia Houthi group took control of Sanaa last September and met strong resistance in the central and southern regions from powerful Sunni tribes and the Sunni-dominated Al Qaeda network.

On Thursday, tribal militia fought against security forces supported by the Houthi group in the southern port city of Aden, the second biggest city in the country, killing at least 15 people.

This is the second bombing attack in Sanaa this year after an Al Qaeda car bombing attack against the police academy killed at least 50 cadets on January 7.

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