Via CNN:

Suicide bombers on Friday attacked two mosques frequented by Houthi rebels who recently seized control of the capital, killing 120 people and injuring more than 300 others, two Houthi officials said.

The blasts happened at Al Badr mosque and Al Hashoosh mosque in Sanaa, both of which serve members of the minority Zaidi sect of Shiite Islam — the sect followed by the Houthi rebels who recently took control of the capital and forced President Abdu Rabu Mansour Hadi to flee. […]

In both of Friday’s assaults in Sanaa, suicide bombings started inside the buildings, followed two minutes later by explosions outside, perhaps to target those fleeing the preliminary blasts, two senior Houthi leaders in Sanaa said.

At Al Badr mosque, the outdoor explosion was another suicide bombing; at Al Hashoosh, the exterior blast was a car bomb, the two leaders said.

ISIS trying to upstage AQAP in its own backyard?