It's been reported that it was in runescape. Some kid told him to kill himself and his response was not only would he kill himself, he'd take a kindergarten with him columbine style.

I'm not sure if I'd actually say it was a joke rather than him just lashing out, but I highly doubt he was even remotly serious and disagree with him being held on that alone.

Obviously I accept I don't know all the facts of the case but I wouldn't be suprised if it really was that stupid. We've had similar cases in the UK.