Heather Jones, the former Franklin County attorney, has resigned from her post as a prosecutor in Johnson County, where she had worked since last year.

Allegations that Jones had been involved in a sexual affair with Jeff Curry, who at the time was Franklin County sheriff, and had bought methamphetamine from a confidential informant, surfaced in a criminal case against Curry in April. Attorneys representing both Curry and Jones strongly denied that Jones has ever bought methamphetamine. Jones has not been charged in the case.

Curry resigned on April 1, entered into a diversion program on charges of obstruction and misconduct, and has since been replaced.

Jones had been the Franklin County attorney until May last year, when she resigned and became an assistant district attorney in Johnson County. She resigned from that post last Thursday to go into private practice, said Robin Fowler, Jones’ attorney.

Johnson County District Attorney Steve Howe said Jones no longer worked in his office but declined to make any further comment.