I'm getting mixed messages, funny text messages

Half an hour ago, I got the following text message on my phone:

"Annetets house blew up yesterday" from 720-364-xxxx

I have no idea what this means. I don't know anyone in Aurora, Colorado (which is where this number lives).

Possibilities:
a) Wrong number
b) Phishing-style scam
c) Mis-delivery
d) I signed up to some bizarre alternate reality live game thingy, and forgot about it.

I suppose I could message back, but it is (b), then that's presumably what they want. I'll think about it for a bit.

See? You don't have to leave the house for interesting things to happen.