Why? Why? Why?

Why were there a bunch of hamburger patties in the alley behind the Alibi office? Nobody knows!

The first time I walked by there was a big plastic bag full of them with a few spilled out. By the time I came back with my camera, the bag was gone and only a few were left on the ground. Someone must have thought they looked too delicious to resist - but why would they leave those other burgers behind? Did they think they were too... dirty? Weird.