SANAA: A suicide bomber dressed as a woman killed 33 people in central Yemen on Wednesday when he blew himself up at a celebration by a militia supporters, medical and security sources said.
Dozens of people were also wounded in the attack in the mainly Sunni city of Ibb, held by the Huthi militia, the medics said, warning that the death toll was likely to rise.
Yemen has been dogged by instability since an uprising forced longtime strongman Ali Abdullah Saleh from power in 2012, with Huthi rebels and Al-Qaeda seeking to fill the power vacuum.
Among those wounded in Wednesday´s attack was Ibb governor Yahya al-Aryani, who was attending the Huthi commemoration of the Prophet Mohammed´s birthday, a medic said.
A security source told AFP the bomber had been wearing a woman´s black abaya and veil when he detonated his suicide belt.
Another bomb was discovered at the entrance to the event´s venue, the source added.
The United States, allied with Yemen in fighting militants, "strongly condemns" the attack, a State Department spokesman said.
"We will continue to stand with the government of Yemen and the Yemeni people to counter the shared threat posed by violent extremists," added Jeff Rathke, the spokesman.
Al-Qaeda in the Arabian Peninsula, the Yemen branch of the jihadist organisation, has pledged to fight the Huthis, who overran the capital Sanaa unopposed in September and have since advanced into mainly Sunni districts such as Ibb.
AQAP military chief Qassem al-Rimi vowed in November to carry out fierce attacks against the militia, and several deadly bombings targeting Huthis have been claimed by the jihadist group.
Al-Qaeda has also carried out a spate of attacks against the security forces from its strongholds in the south and east in recent weeks.
In the southern province of Shabwa on Wednesday, unidentified gunmen killed police officer Colonel Mohamed al-Nessi near the provincial capital Ataq before fleeing, a police source said.
There was no immediate claim for the shooting but last weekend AQAP claimed an attempt to assassinate a top general in an ambush that killed two soldiers and wounded 11.