Kat, you're right. The BBC have updated the report, and the one that's there now doesn't include Liz. I've had a sniff around their site, but there's no sign of the original video.

Maybe I'm wrong, but I remember other spates of violence that seem to come in flurries. When it happens once, others seem to think it gives it some validity. It's too glib to call it copy-cat (although I work in the media and it's a phrase that we do tend to use because it's concise and convenient) but maybe there's someting like that going on?