SIOUX FALLS, S.D. – Federal prosecutors announced the results of four landmark federal investigations that have dismantled major drug trafficking organizations connected to Mexican cartels responsible for flooding South Dakota communities with methamphetamine and fentanyl.

Through coordinated, long-term investigations, the U.S. Attorney’s Office for the District of South Dakota has secured federal convictions against 54 members of four separate organizations. Conservative estimates indicate these four drug trafficking operations combined to smuggle more than 1,000 pounds of methamphetamine and multiple kilograms of fentanyl into the state.

The illicit operations stretched across the state, with local distributors operating from short-term rental properties, hotels, and private residences in Sioux Falls, Rapid City, the Pine Ridge Reservation, and surrounding areas.

“Behind every ounce of methamphetamine and every fentanyl pill in these cases is a South Dakota family that has suffered and felt the damage,” U.S. Attorney Ron Parsons said. “That is who this work is for. We have proven that no link in the chain is beyond our reach-not the local dealer, not the out-of-state supplier, and not the cartel hiding in the shadows behind them.”

The announcement followed the sentencing of Quantiae Harris, 49, of Las Vegas, Nevada, who received 33 years in federal prison for leading an organization that brought large quantities of methamphetamine and fentanyl powder to the region.

Among the operations targeted was the Denver-based Juan Sertuche drug trafficking organization, which directly impacted the West River region. Sertuche, a cartel-sourced supplier, was sentenced to 45 years in federal prison following a jury conviction.

The network included several local operators. Veronica Ortega of Box Elder was sentenced to over 24 years in federal prison as a main local distributor, while Shauntel Shangreaux of Pine Ridge received over 19 years as a key lieutenant.

In the immediate Rapid City area, Paige Sierra of Rapid City was sentenced to over 11 years for distribution and transportation assistance. Jackie Corean of Black Hawk received over 11 years for hosting a distribution hub, and Jenna Lee Holzer of Box Elder was sentenced to 30 years as a major sub-distributor. Darin Wherley, also of Black Hawk, received a sentence of over 26 years.

The multi-agency effort brought together numerous departments, including the South Dakota Division of Criminal Investigation, the Pennington County Sheriff’s Office, the Rapid City Police Department, the South Dakota Highway Patrol, the Federal Bureau of Investigation, the Oglala Sioux Tribe Department of Public Safety, and the Bureau of Indian Affairs.