This morning at 5 am my alarm went off for apparently no reason.

No glass was broken, no doors looked like they had been prised apart or anything else out of the ordinary.

By the time I got outside(maybe a minute after it went off) there was nobody around obviously.

I didn't hear anything before the alarm went off and my dogs didn't make any racket before it went off.

My question is whether or not there is a known fault I should be concerned about that would cause this to happen assuming nobody or nothing actually set it off?

Thanks for the help

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1993 W124 300D
-297K on the clock as I type this.