One of seven people pleaded guilty as part of a plea agreement to charges stemming from a heroin distribution sting in May.

Steven Davis, 31, of Austin pleaded guilty to one count of third-degree sale of drugs Tuesday. His next scheduled court appearance is for March 17, 2015. The other six people pleaded guilty earlier this year.

Perry Black, 24, of Albert Lea pleaded guilty to one count of third-degree sale of drugs as part of a plea agreement. He is next scheduled to appear in court Dec. 31.

Albert Cannon, 56, of Austin pleaded guilty to one count of second-degree sale of drugs as part of a plea agreement, and he was sentenced to more than four years in prison. Cannon was originally charged with an additional two counts of second-degree sale of drugs and four counts of third-degree sale of drugs, which were dismissed as part of a plea agreement. His next scheduled appearance in court was canceled.

Tempest Haymore, 27, of Austin pleaded guilty to one count of fifth-degree possession of drugs as part of a plea agreement. She was originally charged with two counts of third-degree sale of drugs. She is next scheduled to appear in court Jan. 14, 2016.

All four are accused of dealing heroin.

Isaiah Wagner, 30, of Austin pleaded guilty to one count of third-degree aiding or abetting drug sales on Oct. 15 as part of a plea agreement. He is next scheduled to appear in court Feb. 11, 2016.

Nicholas Miller, 26, of Austin pleaded guilty to one count of third-degree aiding or abetting drug sales on Oct. 16. He is next scheduled to appear in court Feb. 11, 2016.

Both Wagner and Miller are accused of driving drug dealers to sales.

Verna Cannon, 52, of Austin pleaded guilty to one count of fifth-degree drug possession.

Police found cocaine on a glass plate at her and Albert’s home, which Verna admitted was hers. Police also found about $3,500 in cash and several small bindles of heroin inside the Cannon home. She is next scheduled to appear in court Feb. 11, 2016.

Law enforcement agencies arrested the group on May 13 as part of a three-month joint investigation into heroin sales in the community.

Officers gathered information on each suspect through informants and observed drug sales. Several of the suspects knew and worked with each other, according to court complaints. Wagner told police he wasn’t a heroin dealer but would drive Davis and Albert Cannon to drug deals for a discount on heroin.

In addition, police observed Miller drive for Alonzo Smith, another suspected heroin dealer. Smith was arrested in August during another joint drug sting by area law enforcement.

Davis has a felony drug conviction from a separate case which ended last November. Davis and Albert Cannon also worked together, according to the complaints. In one instance, Albert Cannon called Davis to drop heroin off as part of a drug sale.

Police observed multiple drug deals done by Albert Cannon over the past few months. Cannon also had two separate felony drug cases from earlier this year, including a case where he was arrested at Days Inn with heroin in his room.