As painful as it is to even have to ask such a question--what are the rules during time of war? For that does seem to be what is happening here: someone has declared war on you and your faith.

I doubt anyone expected the enemies to observe Shabbat, so I must assume there are rulings on what may and may not be done in a war situation. Communicating to civilians that there is an attack seems likely to come under those rules.

Stay safe, and if there is anything we can do from this end of the state, let us know.