This actually reminds me of a nutty incident (years ago) at the hospital complex I worked at. There were many offices throughout the buildings, and a number of them had a mini-refrigerator.
I was friends with one of the security guys, who told me they had received complaints from some offices, that food was missing from the previous night. Security caught a guy on the night maintenance crew "helping himself" to food all over the place, for his midnight snacks.
He should have known that there were security cameras everywhere (and taped). After seeing him (on camera) walk into offices with his cleaning cart only, and then walk back into the hallways eating a sandwich, pudding, a bananna, and a cup of coffee (must have been a Keurig machine inside), they knew they had their man (just like the FBI).