"Did anyone but the officer actually see the perp?"
Not that I know of.
"Doesn't Gun + Mask + Attempted Entry = Probable Cause in the first place?"
"I have to assume the "Officer" is not a real cop or is not armed."
School security officer maybe?
I've not been able to find any additional info on this story.
"I've not been able to find any additional info on this story. "
Nor have I, even on the schools emrgency notification website.
Thats what I love about FR, there is no better breaking news site.