A Fairview man Thursday admitted he distributed methamphetamine he got from convicted dealer Robert Farrell Armstrong, a Washington man who helped bring a large quantity of the drug to Montana for distribution in the Bakken oil fields and elsewhere.

David Abraham Lorenz, 30, pleaded guilty in U.S. District Court in Billings to possession with intent to distribute as charged in an indictment. Another count will be dismissed at sentencing under terms of plea agreement if the judge accepts the deal.

Assistant U.S. Attorney Joe Thaggard said in court records that a multi-agency investigation in early 2013 into a meth trafficking organization that brought the drug from Washington to Eastern Montana identified Armstrong, also known as “Dr. Bob,” as the leader of the conspiracy.

Armstrong used a network of people to transport and distribute the drug in Montana, Thaggard said.

When interviewed by state agents and a Sidney police detective last August, Lorenz admitted he had met Armstrong in June 2012. He received meth from Armstrong and then redistributed it, Thaggard said.

Armstrong told authorities that he provided one to two ounces of meth per month to Lorenz for at least three to four months, he said.

Armstrong and Lorenz are among about a dozen persons charged or convicted in the conspiracy. Armstrong is to be sentenced on July 24.

Lorenz faces a minimum mandatory five years to 40 years in prison and a possible $5 million fine. U.S. District Judge Susan Watters set sentencing for Oct. 8. Lorenz remains in custody.

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Federal court and county reporter for The Billings Gazette.

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