SANAA, Yemen (AP) -- Yemeni officials and witnesses say a series of attacks in the southern port city of Mukalla, including a suicide bombing, killed 12 people and wounded several others.
The officials say the targets of Monday's attacks included intelligence offices, army barracks and checkpoints. Witnesses say gunfire echoed across the city, followed by ambulance sirens.
The officials spoke on condition of anonymity because they were not authorized to brief reporters. The witnesses spoke on condition of anonymity for fear of reprisals.
An Islamic State affiliate claimed responsibility for four attacks, saying suicide bombers had struck counterterrorism forces.
A local al-Qaida affiliate seized Mukalla and held it for a year before being driven out in April by a Saudi-led military coalition.