Murder charges have been dropped against an 18-year-old who was arrested in May, the Cobb County District Attorney and Marietta police said Thursday.

Mekhi Hilali was accused in the shooting death of Tyon Gorman, 19, at a convenience store on Bells Ferry Road, according to police. But surveillance video from a Paulding County gas station shows Hilali was there at the time Gorman was killed, Hilali’s mother told Channel 2 Action News.

"They painted him to be this monster, this bad guy. He's actually a good kid," Artheia Hilali said. "That's what pretty much saved this case. Because without that, showing he was there, it's just like someone can say he was at the scene and ruin their whole life.”

A second suspect was also charged in Gorman’s case, but Marietta police said the shooting death remains under investigation now that Hilali’s charges have been dropped in Cobb.

Though he was released from the Cobb jail Wednesday, Hilali was transferred to the Paulding County jail on a drug possession charge. Drugs were found when investigators searched Hilali’s Dallas-area home during the murder investigation. Hilali was being held without bond Thursday night in Paulding, booking records showed.

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Spencer Herron was a broadcast video instructor at Kell High School in Marietta.