As the St. Louis metro area awaits a grand jury decision in the police shooting death of Michael Brown, gun sales are skyrocketing, a local gun store owner said Monday.

Steven King, who owns Metro Shooting Supplies in Bridgeton, Mo., near Ferguson, told CNN that gun sales “went up exponentially” following the protests in the aftermath of the shooting 18-year-old Michael Brown by Ferguson police officer Darren Wilson on Aug. 9.

Sales have tapered off since then, said King, but “have started to skyrocket once again” as a St. Louis County grand jury nears a decision on whether or not to charge Wilson for Brown’s death.

St. Louis County prosecutors have said that presentation to the grand jury should wrap up as early as this week.

“One-hundred percent of the people that have bought a firearm have bought it because of some sort of fear of the unknown, what’s going to happen this next week or so with the Ferguson verdict,” King said Monday.

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