There is no reason why they can't announce "we are not looking for anyone else at this time".
I don't know if the blokes on here realise that females are constantly looking over their shoulders anyway. I'm quite independent and headstrong, but I have actually (sensibly I think) changed my plans and lifestyle over the last few weeks because of this - so I'm not having to walk anywhere around this area alone at night.
Yes, there is always a risk, but it seems very intensified and very real whilst all this is going on.