Surveillance tape and grim evidence imagery released in the case of GEORGE ZIMMER MAN accused of shooting TRAYVON MARTIN, 17. 

New surveillance video shows Martin, 17, at a 7- Eleven store purchasing Skittles and an iced tea prior to being shot and killed by Zimmerman, the neighborhood watch volunteer charged with second-degree murder in the February 26 shooting death of the teen.

According to reports from coroners citing blood and urine tests, Martin tested positive for traces of THC, the key hallucinogenic chemical compound in marijuana, in his system when he died,

Zimmerman was no more than 18 inches away from Martin when he fired the fatal shot, coroners said in the just-released report.

Zimmerman, 28, is currently at an undisclosed location following his release on bail last month. He's pleaded not guilty to the charges; if convicted, he could face up to life in prison.

Also, new images released in the case seem to back up Zimmerman’s account that he was attacked before shooting.

The shooting sparked additional national controversy after President Obama weighed in with his comments that if he had a son he would’ve looked like Trayvon.

Adding to the furor, Zimmerman was not arrested for 44 days following the shooting.

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