Yes, Jonah found Caramale pocking his head out of a hole in the corridor closet one floor below us! He was also mewing when the boys approached the lift lobby on their way to school. That's how Jonah noticed him and came back to let me know. I ran down with Jonah and picked Caramale up from the dirty hole leading to the drain. I gave him a wash in a basin of warm soapy water, patted him down with a towel and blew dry him with my hair dryer, set on cool air. He made a little fuss when I wash him, other then that he behaved quite well :) We are very happy to have him back again.
We are now trying to train him to use the potty. I'm getting tired of cleaning up the sand that got swept up whenever he uses his litter box. Sand everywhere! Let's hope the training works.