For all we know, he had marijuana in his pockets...AND WAS ON DRUGS....AND DRUNK.
No one has mentioned an autopsy but I believe it's required.
From what I understand, an autopsy was performed but the results have NOT been released yet. The mortician said no marks on Martin, but if Martin was only beating Zimmerman about the eyes and nose (avoiding his mouth and teeth), I would not expect any knuckle cuts. The mortician probably was pandering for advertising purposes anyway!
JC