GREENE COUNTY, Va. (CBS19 NEWS) -- A dozen people were arrested on drug and firearms charges Tuesday as part of a round-up.

The 3A Narcotics and Gang Task Force and the U.S. Marshal’s Service conducted a warrant round-up in Charlottesville and the counties of Greene, Albemarle and Fluvanna.

According to the Greene County Sheriff’s Office, 12 people were arrested on 28 charges.

Officials also seized an ounce of fentanyl, two ounces of PCP, half an ounce of methamphetamine, 10 pounds of marijuana, 25 marijuana plants and 14 firearms.