A federal judge Tuesday sentenced Duane Ellsworth Lafferty, 69, of Gettysburg, S.D., to more than 10 years in federal prison for trafficking methamphetamine.
U.S. District Judge Richard Cebull ran Lafferty's 121-month sentence concurrent with a 20-year sentence he is serving for a drug conviction in South Dakota.
Lafferty pleaded guilty to two counts of conspiracy, four distribution counts and one count of using a telephone to aid drug sales.
Lafferty admitted he conspired with Leon Meidinger, 65, of Billings, and Kaylene Alden of Crow Agency to sell meth in Billings from September 2001 to April 2002.
Prosecutors said Lafferty got meth from Meidinger and sold it to an undercover FBI agent on four occasions. Lafferty and Alden also distributed meth to the agent. Both Meidinger and Alden also were convicted.