I really don't think they did. DNA tests are being taken, one of them says he can't wait until it's all over because he is positive that he is guilty and wants everyone to know that. There are always false allegations where bands or celebrities are concerned.
Hey, that's a crime in some countries! Especially loosely "united" coalitions of "states" on the North American continent. DO NOT ATTEMPT TO DETRACT FROM BLACK METAL'S MANDATED QUOTA OF EVIL GRIMNESS!