SALISBURY — The Rowan County Sheriff’s Office reports that a six-month undercover investigation has led to the arrest of two Salisbury residents, who now face charges in trafficking heroin.

The arrests happened Tuesday. The Sheriff’s Office was assisted in the investigation by the Salisbury Police Department and the U.S. Department of Homeland Security Investigations (HSI).

John Wayne Gray, Jr., 44, and Sarah Marie Hoffner Pharr, 29, both residents of 314 Mocksville Ave., were arrested following a 43-gram delivery of heroin in a parking lot of a business inside the city limits of Salisbury.

Following the delivery,  a search was conducted at 314 Mocksville Ave., and investigators seized $480, 2.6 grams of heroin, opiate tablets, a shotgun and shotgun ammunition.

Pharr was charged with trafficking heroin by transportation, possession and sale, and conspiracy to traffic heroin. She was placed under a $100,000 secured bond.

Gray was charged with trafficking heroin by transportation, possession and sale, conspiracy to traffic heroin, and felony maintaining a vehicle. Gray had additional charges stemming from a previous undercover purchase on Nov. 17 and was charged with trafficking heroin by transportation, possession and sale.

Gray was placed under a $500,000 secured bond.

The amount of heroin seized Nov. 29 will subject  both defendants to a Level III drug trafficking charge with potential sentences ranging from 18.75 years to 23.25 years in prison and a fine of $500,000.

Gray and Pharr are the third and fourth individuals charged with Level III drug trafficking charges in the past several weeks.