He doesn't seem to be anywhere in the apartment. All I can figure is that he got out this morning when I left, but I can't see HOW. But he isn't here, and the apartment wasn't broken in to, or as far as i can tell entered at all. Nothing was moved around anywhere.
I have posted signs in the lobby of the building, and i'll post signs outside too. I went around the front of the building with a bag of cat food, shaking it and calling him. Nothing.