The only part of this that I have a problem with is “the case is under investigation”.
What is there to investigate?
Although I must admit, if it were me, I would sound a bit more anguished.
Unless you live across the street from a donut shop, calling 911 is a waste of time, except to tell them you were in fear of your life as perps were beating in your door and you had to shoot one or more of them.
“I was so afraid for my life, I don’t remember how many shots I fired.” “Please call for an ambulance for them!” [actually you are thinking Coroner’s Wagon]