At least 30 killed in car bombing in Yemeni capital

A suicide bomber driving a minibus full of explosives killed at least 30 people Wednesday morning as cadets gathered near a police academy in the heart of Yemen's capital, Sanaa, security officials and witnesses said.

The blast wounded dozens of people, officials initially said. The officials spoke on condition of anonymity as they weren't authorized to brief journalists.

At the scene of the blast, the dead and wounded lay on a sidewalk against a wall. Water sprayed by firefighters to extinguish the blaze mixed with their pooled blood. A police officer's certificate sat in it, soaked crimson. A charred taxi cab smoked near what remained of the minibus, metres from a gate for the police academy.

"What happened is we were all gathering and ... [the bomber] exploded right next to all of the police college classmates," eyewitness Jamil al-Khaleedi told The Associated Press. "It went off among all of them, and they flew through the air."

No one immediately claimed responsibility for the attack. Yemen's local al-Qaeda branch, targeted in frequent U.S. drone strikes in the country, has carried out similar attacks in the past. Washington considers al-Qaeda in Yemen to be the world's most dangerous branch of the terror network as it has been linked to several failed attacks on the U.S. homeland.

The blast comes as Shiite rebels known as Houthis seized large areas of Yemen, including Sanaa, earlier this year as part of a protracted power struggle with President Abed Rabbo Mansour Hadi. Their critics view them as a proxy for Shiite Iran, charges the rebels deny. Al-Qaeda militants have targeted the rebels in bombings in the past.

An al-Qaeda suicide bomber killed at least 24 people on Dec. 31 in an attack on Houthis as they commemorated the birth of the Prophet Muhammad.