I did say mono-citizens, sir. This dude should be serving life sentence without parole. Heck, I would prefer solitary confinement for life for these sort of people but that probably won't happen in a European country. Apparently that's human rights violation...
First let him check his mental state. From what I have heard, this guy seems to be having mental issues. But if it is found that he is in a sound mental health, then I don't support releasing him in to the public. That said, the western governments which engage in Islamic appeasement all the time should ask themselves whether they want more Breiviks in their nations.