COLUMBUS, Ohio — Misdemeanor marijuana possession cases are no longer being prosecuted by the city of Columbus.

City Attorney Zach Klein said Wednesday a new state law legalizing industrial hemp would require testing to distinguish hemp from marijuana. Hemp contains little if any THC, marijuana's psychoactive ingredient.

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Klein says his office can't prove marijuana possession beyond a reasonable doubt without testing. He's also dismissing pending misdemeanor possession charges.

He says officers still have constitutional grounds to stop someone or search them if they believe a person has marijuana, which remains an illegal substance.

A new city ordinance reduces penalties for possessing small amounts of marijuana. Possession of less than 100 grams (3.5 ounces) is a $10 fine, while possession of between 100 and 250 grams (8.8 ounces) is $25.