The tomb was empty. What would He have done with His old three-dimensional body and why wouldn't the Jews and Romans eager to disprove the Resurrection have found it?
If I have read my Rudy Rucker correctly, a 4 dimensional being can put 3 dimensional objects into a 4 dimensional bag and lift it out of the tomb and out of the third dimension entirely.What He did specifically with the old body after that, only He knows.