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Press Release

Sioux City Man Sentenced to Federal Prison

For Immediate Release
U.S. Attorney's Office, Northern District of Iowa

A Sioux City man who was selling methamphetamine around the Sioux City area was sentenced February 1, 2023, to more than 4 years in federal prison.

Matthew Antonovich, age 39, from Sioux City, Iowa, received the prison term after a June 21, 2022, guilty plea to felon in possession of a firearm and conspiracy to distribute methamphetamine.

In a plea agreement, Antonovich admitted to conspiring to sell methamphetamine around the Sioux City area.  Antonovich is a convicted felon and was unlawfully in possession of a short-barreled shotgun. 

Antonovich was sentenced in Sioux City by United States District Court Chief Judge Leonard T. Strand.  Antonovich was sentenced to 50 months’ imprisonment.  He must also serve a 3-year term of supervised release after the prison term.  There is no parole in the federal system.

Antonovich is being held in the United States Marshal’s custody until he can be transported to a federal prison.

The case was prosecuted by Assistant United States Attorney Jack Lammers and investigated by Iowa Division of Narcotics Enforcement, Woodbury County Sherriff’s Department, Sioux City police Department, South Sioux City Police Department, Nebraska State Patrol, the United States Postal Service, and the Bureau of Alcohol, Tobacco, Firearms and Explosives.

Court file information at

The case file number is 21-4041.

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Updated February 2, 2023

Drug Trafficking