Ahmed Ali Almontaser, 28, of 310 Damon St., was arrested on two counts each of possession with intent to sell and deliver synthetic cannabinoid, sell and deliver synthetic cannabinoid and maintaining a place for keeping and selling controlled substances.
He was in the Johnston County jail under a $50,000 bond.
Police said the arrest was the result of a seven-month undercover investigation into the sale of synthetic marijuana at A Tobacco Shop, 864 Gulley Drive.
Investigators said they seized a large quantity of synthetic drugs that were for sale under the names "Darkness," "Black Magic Smoke" and "Funky Green Stuff."
A state law went into effect last year banning the sale of such substances, which are often labeled as "herbal incense" or "bath salts."
It's a misdemeanor for simple possession and a Class 1 felony for possessing substantial quantities or trafficking.