Police surveillance video obtained by ABC News shows no blood or bruises on George Zimmerman, who allegedly shot and killed Florida teenager Trayvon Martin. The video puts Zimmerman's account of events into question.

The video shows Zimmerman arriving at the Sanford Police Department in a police cruiser.

Zimmerman told police last month that he had followed Martin on foot, but eventually lost sight of Trayvon and turned around to walk back to his SUV. That is when, according to Zimmerman's account, Martin approached him from behind and confronted him.

Zimmerman said that Martin punched him in the nose, knocking him down, and then began banging his head into the ground. That is when Zimmerman allegedly shot Martin.

The initial police report noted that Zimmerman was covered in grass, and was bleeding from the back of the head and nose. Zimmerman’s lawyer has also said that his nose was broken in the incident.

But the surveillance video shows no blood or bruises on him. It is unclear whether the medical attention Zimmerman reportedly received would have stopped him from bleeding.

The lead homicide investigator on the Trayvon Martin case recommended George Zimmerman be charged with manslaughter, but was denied.

Chris Serino, the Sanford investigator, filed an affidavit on the night of crime saying he was unconvinced of Zimmerman’s account. However, the state attorney’s office told Serino not to press charges against Zimmerman because there wasn’t enough evidence against him.

Martin’s parents and lawyer have said that Zimmerman, who is still free, should be arrested for pursing Martin despite police urging Zimmerman not to follow him on the 911 tapes.

With prior reporting by Andrew Jones

Watch video, courtesy of ABC News, below:

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