[Rebelbase]

SKY news reports that that someone reported hearing gunfire, which prompted the lock down. No shooter seen or located.

Nail guns, backfire, firecrackers?

[bolobaby]

Seriously? Is this the culprit?

Hoplophobia on parade again?

[driftdiver]

I interviewed a lady (for a job here) who had been in the building during the first shootings. She wasn’t right in the head. So I could easily see others over reacting to a sound they heard.