The video prove Trayvon attacked Zimmerman

Enhanced: A clarified version of the same surveillance tape by ABC News is showing what appear to be welts or gashes on the back of George Zimmerman's head

ABC News, which first broadcast video showing George Zimmerman appearing uninjured after his scuffle with Trayvon Martin, reported Monday that enhancing the video shows a wound on his head.

“There was no obvious sign of any injury to Zimmerman's head or face on the video until it was enhanced,” the network said.

The new CSI-style improved video shows a “gash or mark,” ABC said.

The enhanced video does not show any injury to Zimmerman's nose, nor any blood on his shirt.

Zimmerman, 28, says Martin, 17, decked him with a punch in the nose and repeatedly slammed his head into the ground before he shot the teenager Feb. 26.

His lawyer says Zimmerman’s nose was broken and the back of his head had two gashes. A police report said his nose and the back of his head was bleeding.

The police surveillance video of Zimmerman arriving at the police station in Sanford, Fla., appeared to show him uninjured. Trayvon’s family seized on it as proof that Zimmerman was lying about being attacked by Trayvon.

“When we looked at the video, it was obvious that there were no visible injuries,” Trayvon’s mother, Sybrina Fulton, told CNN last week.

The true extent of Zimmerman’s injuries is crucial because he claimed he shot Trayvon in self-defense after the teenager jumped him.

Zimmerman was treated by paramedics at the scene and was not hospitalized.

The Daily News obtained EMS documents last week showing that a call from the scene for a second ambulance to treat Zimmerman was canceled.

His injuries were also apparently light enough for cops to take him to the station with his hands cuffed behind him, and allow him to walk unaided to an interview room.

The Miami funeral director who prepared Trayvon’s body for burial said the teenager had no bruising on his knuckles or any other sign that he had been in a brawl.