Attackers fired rocket-propelled grenades at the main prison in Yemen’s capital on Thursday in a failed attempt to free inmates, security sources and witnesses said.

Explosions and gunfire between security forces and the attackers could be heard several kilometers away from the prison in northern Sanaa, which has al Qaeda members among its inmates. The biggest explosion rattled windows in the area.

No one claimed responsibility for the attack, but Yemen is grappling with a growing threat from one of al Qaeda’s most active wings, which has killed hundreds of people in assaults on state and military facilities in the past two years. […]