NECN/NBC News: Jay Gray) - Less than 24 hours after firing the shot that killed Trayvon Martin, George Zimmerman was back at the scene of the fatal confrontation and telling detectives his side of the story.
The police video and other interviews by investigators are part of discovery evidence released overnight by Zimmerman's defense team.
"It is what it is," said Zimmerman attorney Mark O'Mara. "Now it's out there for the public to review, but most importantly, it's evidence that we'll be able to get in front of a jury."
During a voice stress test administered by police Zimmerman described the unarmed teenager as the aggressor.
"He took my head and planted it into the concrete several times, and each time I thought my head was going to explode more than the last," Zimmerman said.
Later he talked about the fatal shot, saying "and I grabbed my gun and aimed it at him and fired one shot. He kind of sat back and said, 'You got me, you got it,' or something like that. And I thought he was saying that he heard the shot and that he was giving up. So I pushed him off me. I don't remember if I pushed him off me..."
Martin's parents and their lawyers have questioned Zimmerman's memory, especially when it comes to what happened that night.
Both sides in the controversial high-profile case are preparing for the trial, while continuing to try and gain momentum in the court of public opinion.
Sanford Police Chief Bill Lee, the man who ultimately decided against arresting Zimmerman in the wake of the shooting, has been fired.
Late Wednesday night the city issued a press release saying Lee had been "relieved of his duties."
Lee had been on paid administrative leave.