Wow, condemns the violence whilst enabling the far right at the same time. It's stupid statements like that that could see it becoming more than just an isolated incident there.
Bellingcat draws links between the alt right fanbois on 8chan bulletin boards. The shooter's manifesto is some Breivik worship, with some meme culture, and a large amount of Serbian racism.
His music included "Serbian Strong," "The British Grenadiers regimental march" and "Fire" - The crazy World of Arthur Brown.