Robert E. Peetz, 27, of St. Robert, was sentenced to seven years in prison without parole.
On Oct. 9, 2012, Peetz pleaded guilty to participating in a conspiracy to distribute heroin. He said he began selling the drug in the fall of 2010.
Federal agents used a confidential source to make three undercover purchases of heroin from Peetz in August 2011.
Peetz estimated he sold between 5-6 ounces of heroin, which is in excess of 100 grams.
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