They bust in, he shoots, realizes his mistake, drops his gun, is taken in without further incident, is released from "investigative detention" because the prosecutor thinks his claim of self-defense within his home might be valid.
In the meantime, they figure out that either a roommate called in the bomb threat or it became evident that somebody spoofed the phone number or pinned into his phone line. (Kid wanting to get out of an exam or who had a grudge against him?)
But I, too, await further information.
I'm not signing this one so nobody will know who posted it.