Who's been sleeping in our driveway?

Bit of a sad photo this. When I moved the car earlier we discovered that someone has been stock-piling food in the corner of our car parking area, invisible both from the house and the street when the car is in there. Which suggests that someone has been, or is intending, to spend the night there.

UPDATE: the food stayed there for a few days, but then vanished as mysteriously as it arrived.