This took place in the "branch-town" of Selters in Germany in front of more than 30 other witnesses.
It was a knife-stabbing that took place without a word or anything in advance that could explain why it happened.
Quite a tragedy...
http://www.fnp.de/tz/region/lokales/tod-eines-taeters_rmn01.c.8415611.de.html
(if one puts the url in google-translate, one might understand what it is all about for those who do not speak German).