Hennepin County Sheriff Dawanna S. Witt delivers remarks from a podium at the United States Attorney’s Office for the District of Minnesota office in Minneapolis, Minnesota. Other officials stand in a row behind.

The ATF, FBI, Minneapolis Police Department, IRS Criminal Investigation, U.S. Postal Inspection Service, Hennepin County Sheriff’s Office, Minnesota Bureau of Criminal Apprehension, and Minnesota Department of Corrections are investigating the cases, with assistance from the U.S. Marshals Service, DEA, Homeland Security Investigations, and the Hennepin County Attorney’s Office. The Ramsey County Sheriff’s Office, Dakota County Sheriff’s Office, St. Paul Police Department, and numerous other law enforcement agencies contributed to this investigation through reports or evidence control.

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