Watch the vid..
Why the beheading should be kept a secret is anyone's guess. What has become clear is how easily authorities in Germany can censor the news and punish bloggers who spread undesired information. They have a vast toolbox of laws at their disposal. It does not seem to bother them that the law invoked in this case stipulates explicitly that it shall not be applied to the "reporting of contemporary events."
https://www.gatestoneinstitute.org/12618/germany-press-freedom