Ummm, how is this even possible?

NEW YORK, Apr 5, 2005 (Associated Press)— A deliveryman who vanished after taking Chinese food to a Bronx apartment complex was found alive Tuesday after apparently spending four days trapped in an elevator that had become stuck between floors.

( the rest of the article )

If the police canvassed the apartment complex, how did they not notice the stuck elevator? If I was trapped in an elevator for four days, I would be making a LOT of noise! Something about this just doesn't seem right...