DUBAI - Islamic State's Yemen branch claimed responsibility for two bomb explosions at a mosque in the capital Sanaa on Wednesday that Houthi-controlled media said killed 28 people. The ultra-radical Islamist militant group said in a statement circulating on Twitter that a suicide bomber had blown himself up in the mosque, and that a car bomb parked near Houthi medics outside the mosque detonated shortly afterwards. The Iranian-backed Houthis are pushing for more rights for Yemen's Zaydi Shi'ite Muslims, who are regarded as heretics by the Sunni Islamic State.