“Another Muslum perhaps?”
My first thought, as well.
I suspected that it was a Muslim, too, although maybe it was just somebody doing the spectacular suicide where you try to take out as many other people as you can. I think that happened in California a few years ago, although the would-be suicide survived and was charged with homicide, IIRC.
On the other hand, I guess there's no reason there couldn't be Muslims living in eastern Nevada. I don't know the area.
Mine too.