My guess would be a couple of the neighborhood teenagers, about 15 years old. Big enough to be out wandering around but too young for a car.
Try and do your own “crime investigation”. Go around checking the holes. Double glass will have two holes. Line them up and you’ll see where the perp was shooting from.
I’ll bet most point to the back yard of a home with teenagers.
Forgot to add the weapon is most probably a pellet rifle.
28 year old stoner living in mom and dads basement?