U.S. and Saudi authorities recently foiled an al Qaeda plot based in Yemen to bomb a U.S.-bound airplane . Yemeni capital on high alert over warnings of possible attack , an official says . eight al Qaeda militants , eight civilians killed in Lowder district , Yemeni security officials say . Clashes between al Qaeda fighters , tribesmen reported in Lowder district . eight Interior Ministry fighters , Seven security officers reported killed in Lowder district .
Yemeni capital on high alert over warnings of possible attack , an official says . eight al Qaeda militants , eight civilians killed in Lowder district , Yemeni security officials say . Clashes between al Qaeda fighters , tribesmen reported in Lowder district . eight Interior Ministry fighters , Seven security officers reported killed in Lowder district .