No chance the alarm button on a key fob happened to get pressed accidentally?
I walked into a conference room at work for a meeting with an important customer. I sat down. Just then a car alarm went off from behind my head. I looked out the window and it was my car. Somehow the key fob in my pocket got pressed. I figured it out quickly and the meeting went on.
It can happen.
I've also heard of such being triggered by passing cars, neighbors electronics, etc.
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