A loner, a quiet teen, a kid with psychological problems, a teen obsessed with mass shootings, especially the one done by Breivik.
It's only waiting for the verdict that he was autistic. The other kind of dangerous people.
A Muslim man screaming "Allahu akbar" before killing innocents and the German media being unable to imply a radical Muslim extremist narrative, instead chose to infer a relationship with Breivik, the far right wing terrorist. I can understand why the Liberal Media in the Liberal Germany would do that. Doesn't mean I will not see that there was possibly a little bit of both.
What I read in Dutch and German news is that this shooting was not IS related. "Amokläufer".
If I were IS, I'd claim anything I could get away with. Anything to spread the fear. That's what they want, and they are pretty good at it, so far.
That there are IS related attacks is beyond doubt. That that needs attention too. That there are other shootings and attacks is also clear. Blaming all on IS would make the world delightfully clear, with good and bad, god and devil. The world is not that clear. The lone shooters/car drivers/ etc will be part of our world and will go undetected till they do their deeds.
(With the car I am not referring to the truck in Nice, but to Apeldoorn, 2009)