The suspect 's motive was revenge against the U.S. military for its Kosovo operations . The bus was occupied by 15 members of a security forces team that was on its way to Ramstein Air Force Base in Germany before deploying to Afghanistan , the spokesman said . Arid Uka , age 1 , a senior airman from U.S. , was killed , the military says . The suspect , Arid Uka , left Kosovo at age 1 and was an ethnic Albania , a Kosovo official says . Uka allegedly confessed and says he acted alone , a German intelligence official says .
The suspect 's motive was revenge against the U.S. military for its Kosovo operations . Arid Uka , age 1 , a senior airman from U.S. , was killed , the military says . The suspect , Arid Uka , left Kosovo at age 1 and was an ethnic Albania , a Kosovo official says . Uka allegedly confessed and says he acted alone , a German intelligence official says .