Chicago Drug Dealers Sentenced in South Dakota Heroin Conspiracy

United States Attorney Ron Parsons announced that a duo from Chicago, IL, convicted of Conspiracy to Distribute a Controlled Substance were sentenced by U.S. District Judge Karen E. Schreier.

Ronald Tyree Thigpen, a/k/a “T,” a/k/a “TJ,” a/k/a “Ty,” a/k/a “Tyree,” age 38, was sentenced on April 15, 2020, to 135 months in federal prison, followed by 5 years of supervised release.  Ann Platt, a/k/a “D,” a/k/a “Deanna,” a/k/a “Pretty Eyes”, age 42, was sentenced on January 27, 2020, to 120 months in federal prison, followed by 5 years of supervised release.  They were both also ordered to pay $100 to the Federal Crime Victims Fund.

Thigpen and Platt were indicted for Conspiracy to Distribute a Controlled Substance by a federal grand jury on April 2, 2019.  Thigpen pled guilty on January 21, 2020, and Platt pled guilty on November 7, 2019.

Thigpen and Platt worked together to distribute heroin in Sioux Falls.  During the course of their conspiracy, the two trafficked heroin from Chicago for redistribution to customers in Sioux Falls.  Investigators learned that heroin supplied by this group was responsible for the death of a Sioux Falls woman in March 2018.

This case was investigated by the Drug Enforcement Administration and the Sioux Falls Area Drug Task Force.  Assistant U.S. Attorney Jennifer D. Mammenga prosecuted the case.

Thigpen and Platt were immediately turned over to the custody of the U.S. Marshals