My question is where this piece of equipment is located. If it's in the basement, the perp might have tripped it intentionally - but if it's upstairs, would an animal tech have had access to that part of the building?
It MIGHT just be a coincidence - if it was, it might have interrupted the perps attempt to clean up/dispose of the body.
There are multiple reports that RC went to a bunch of places in the building that were outside his normal route, including areas that he really had no business being in but still had access to.
I'd be very interested in knowing if his card shows access in the area that had the sensor that triggered the alarm.