A suicide bomber dressed as a woman killed 33 people in central Yemen on Wednesday when he blew himself up at a celebration by Shia militia supporters, medical and security sources said. Dozens of people were also wounded in the attack in the mainly Sunni but Huthi militia-held city of Ibb, the medics said, warning that the death toll was likely to rise. Among those wounded in Wednesday's attack was Ibb governor Yahya al-Aryani, who was attending the Huthis' commemoration of the Prophet Mohammed's birthday, a medic said.