Are you saying that someone saw the person in pieces and that it wasn't some other debris, or because they could not identify that person as male or female right away?
My son's fraternity brother saw pieces of flesh tossed around and it came across the news that the person couldn't be immediately identified as to whether it was a man or woman because they were blown to bits. He actually felt the heat from the bomb blast and was thrown back. Then he took off running along with several others toward Elm to get as far away as he could.
All I know is what I heard and was told. A girl in the sorority next door was near also and said the same thing. They were being interviewed as my daughter and I left the fraternity to get out of the area.