It contradicts an allegation from Zimmerman's father earlier in the day that the unarmed black teenager broke his son's nose during the incident and also left him with bloody injuries from slamming the man's head repeatedly on to a concrete pavement. The eyewitness says he saw no blood and that the entire confrontation took place only on grass.
"I saw two men on the ground, one on top of the other. I felt they were scuffling and I heard gunshots which to me were more like pops," he said in an interview broadcast on CNN's Anderson Cooper 360, his voice disguised to protect his identity.
"I don't know if was an echo but it definitely made more than one pop.
"After the larger man got off there was a boy, obviously now dead, on the ground facing down.
"It was dark. I can't say I watched him get up, but in a couple of seconds or so he was walking towards where I was watching and I could see him a little bit clearer. It was a Hispanic man. He didn't appear hurt or anything else. He just kind of seemed very worried with his hand up to his forehead."
Trayvon Martin killing: witness says he saw Zimmerman walk away uninjured | World news | guardian.co.uk