Those two articles are all we know.
background is following:
EULEX is unnauthorised EU mission in kosovo that Serbia have rejected and Albanians supported.
Bombing of EULEX headquorters would be seen as “Serbian terror act” and blame would fall on Serbia.
In past weeks prior to bombiong, Kosovo Albaniam authorities claimed that Serb enclaves are “nests of crime and police will crack them down”.
Bombing of EULEX HQ would be used as a “evidence” of Serbs plotting against “peace and stability” and gave “card blanche” to Albanians to kill or chase-out remaining Serbs.
So what would the Germans stand to gain? They do not exactly have much of a standing military to fight, so what is their motive?