An employee for the D.C. Department of Consumer and Regulatory Affairs has been arrested and charged with selling fentanyl, per a police affidavit entered into federal court in Alexandria. Many of the transactions involving the synthetic opioid allegedly occurred in front of his government office in Southwest D.C.

Darrell Marcellus Pope, a program support specialist at the agency regulatory agency, is accused of supplying fentanyl to a network of drug dealers based in Woodbridge, Virginia. Pope himself lives in Clinton, Maryland and works in the District. The Washington Post was the first to report the news.

Agents in Prince William County discovered Pope’s involvement during their surveillance of a suspected drug dealer’s residence in Woodbridge, court documents say. A man was observed exiting that residence and driving to the vicinity of the DCRA office in D.C. to meet with Pope. This happened again at various other locations in Clinton, Maryalnd, per the affidavit.

Eventually, detectives began an undercover operation, and agents purchased drugs from Pope nine times from August 20 to September 18. Eight of the nine purchases were completed outside the DCRA office at 1100 4th Street Southwest. On these occasions, “Pope was observed outside his office building on foot and walking up to meet” the undercover officer. Pope sold the detective varying amounts of fentanyl or heroin and fentanyl—some transactions were for as little as two grams, and one was for as much as 30 grams, the affidavit says.

Pope has been placed on administrative leave from DCRA, per the city. Pope’s wife is also employed by DCRA, and while she is named in the complaint, she has not been charged with any crimes.

Pope is charged alongside another man, Ronald Gorham, who investigators believe was supplying him with the fentanyl and heroin that he sold to officers, according to the affidavit.

On Tuesday, federal agents conducted a search at DCRA and arrested Pope at the office, per the affidavit. It wasn’t immediately clear at the time whether the search had to do with DCRA’s work as a city agency, though city officials quickly clarified that the search was only related to one employee, and not to his work at the agency.

“Yesterday, the Federal Bureau of Investigation’s Washington Field Office executed a search warrant related to an ongoing investigation,” Deputy Mayor for Operations and Infrastructure Lucinda Babers told DCist in an email statement. “The search was executed at the employee’s work station at the District’s Department of Consumer and Regulatory Affairs. The employee was placed on administrative leave today. The search warrant is not related to any agency operations.”

On Tuesday, law enforcement found 30 grams of suspected fentanyl on Pope’s person and an additional quantity of the drug at his workstation, court documents say. At his home in Clinton, agents found one ounce of suspected fentanyl, three firearms, and a scale.

He appeared in federal court in Alexandria for the first time on Wednesday.