At least 77 people were killed when suicide bombers blew themselves up in two mosques in the Yemeni capital Sanaa on Friday during noon prayers, medical sources told AFP but Xinhua according to its local sources reporting 88 martyr and more than 100 injured.

The mosques are known to be used mainly by supporters of the Shi'ite Muslim Houthi group which has seized control of the government.

One bomb exploded inside Badr mosque in southern Sanaa, and was followed by another at the gate as worshippers fled, witnesses said.

The third suicide bomber targeted Al-Hashahush mosque in northern Sanaa.

The Huthi militia's Al-Massira television said hospitals in the capital had made urgent appeals for blood donations.

The attacks are the deadliest since a car bomb killed 40 people and wounded dozens more at a police academy in Sanaa in January as recruits lined up to register.

Yemen's top security body blamed Al-Qaeda for that blast although a leader of the terrorist network denied responsibility.
The Huthis overran Sanaa in September and have since tightened their grip on power.

Yemen, a front line in the US war on Al-Qaeda, has descended into chaos since the 2012 ouster of longtime strongman Ali Abdullah Saleh.