Neighborhood watch volunteer George Zimmerman re-enacted the fight he had with Trayvon Martin in police video released Thursday, giving his most detailed account yet of what led him to fatally shoot the unarmed black teenager.

Zimmerman tells his side of the story to detectives, saying he grabbed his gun from a holster on his waist before Martin could get it, and shot the 17-year-old Martin once in the chest as they fought on the ground outside townhomes in a gated community. After firing, Zimmerman said thought he missed.

“He sat up and said, ‘You got me. You got me, or something like that,'” Zimmerman said.

In the video Zimmerman said Trayvon jumped out of bushes and ambushed him. Previously, Zimmerman has said Trayvon sneaked up behind him and knocked him to the ground with one punch before pounding his head into the pavement.