Fighting in Abyan and other provinces comes amid crackdown on al Qaeda . Explosives expert from Yemen was among those killed , Yemeni government media reports . Operations last month included attacks by Yemeni commandos and suspected U.S. drone strikes , according to a Yemeni official . Two wounded , four Yemeni security forces die in a gunfight in Sanaa , Yemeni sources say .
Fighting in Abyan and other provinces comes amid crackdown on al Qaeda . Explosives expert from Yemen was among those killed , Yemeni government media reports . Two wounded , four Yemeni security forces die in a gunfight in Sanaa , Yemeni sources say .