A gunman opened fire on a bus carrying US Air Force personnel outside the passenger terminal at Frankfurt International Airport on Wednesday, killing two airmen and wounding two others before being subdued while trying to flee.
The four airmen were stationed at RAF Lakenheath in England and being deployed to either Iraq or Afghanistan.
German police had identified the shooter as Arid Uka, a Kosovar citicizen from the northern village of Mitrovica. The gunman reportedly shouted 'Allahu Akhbar!' before opening fire on the bus and attempted to flee after his gun jammed.
Kosovo unilateraly decalred its indepedence from Serbia in 2008, becoming one of the last former Yugoslav republics to break away from Belgrade. 8700 NATO troops are still stationed in Kosovo as part of the KFOR after a series of airstrikes against Serbia in 1999.
The US Air Force maintains a number of bases around the Frankfurt area including Ramstein Air Base, which was reportedly targeted by the Islamic Jihad Union terrorist group in 2007 before German authorities were alerted to their plot.