Oh sure, could be a convert, or even a muzzie family. Given official reluctance to name names, it’s getting more likely all the time.
But sometimes names are just names. Zahawri is Arabic, but not exclusively Muslim. Names like Samir could be rooted in Arabic or could be from India. Seems to be Lebanese Christians in the neighborhood.
When we lived in Santa Monica we had Lebanese and Egyptian friends. I rather liked the “melting pot” aspect of life there, though now I won’t go near the place. Kids graduated from Santa Monica HS...(Samohi), at the time ranked among the ten top public high schools in the US. Now, I don’t know.
So we wait until the media tells us who the shooter is. And his “motive.”
Oh yeah, I forgot his motive was his gun.
Expect his religion to be reported only if he is Christian.