An inmate from New Sharon is accused of dealing drugs while in the Franklin County Jail.
Authorities say 41-year-old Christopher Coulter faces multiple charges after drugs were brought into the jail undetected.
The investigation began last month when the assistant jail administrator received information about the contraband.
Also charged but not arrested in the criminal activity was Anthony Ellis, 47, of New Sharon for Trafficking in Prison Contraband class C, Jessica Powers (35) of New Vineyard for Criminal Attempt class D, and Forrest Greenman (44) of Farmington for Unlawful Possession of Scheduled Drugs class D.
Coulter is charged with Violation of Condition of Release 2 counts class C Felony, Trafficking in Prison Contraband class C and Criminal Attempt class D.
All will face an April 24 court date.