Ryan Wolterman v. Shawn Syverson, Individually and in His Official Capacity as a Law Enforcement Officer; Gregory Baloun, Individually and in His Official Capacity as Sheriff; Dickinson County, Iowa

Wolterman · United States Court of Appeals for the Eighth Circuit · January 14, 2026 · No. 24-1482

Summary

The United States Court of Appeals for the Eighth Circuit affirmed summary judgment for Dickinson County, Sheriff Gregory Baloun, and Deputy Sheriff Shawn Syverson in Ryan Wolterman's action under 42 U.S.C. § 1983 and Iowa law. The court held that Syverson had reasonable suspicion to conduct a Terry stop and reasonably relied on another officer's probable-cause determination in assisting with Wolterman's arrest. The court also rejected Wolterman's Monell, false-arrest, negligent-supervision, and respondeat-superior claims.

Holdings

  1. Deputy Syverson had reasonable suspicion to conduct a Terry stop because Wolterman matched the general description of the suspected participant and was temporally and geographically proximate to the reported altercation.
  2. Deputy Syverson did not violate Wolterman's constitutional rights because, as an assisting officer, he reasonably relied on Officer Hoss's probable-cause determination and was not required independently to establish probable cause.
  3. Deputy Syverson was entitled to qualified immunity because the undisputed facts established no violation of Wolterman's Fourth Amendment right to be free from unreasonable seizure.
  4. Wolterman's Monell claim against Sheriff Baloun and Dickinson County failed because there was no underlying constitutional violation by Deputy Syverson.
  5. Deputy Syverson was not liable for false arrest because the detention was not unlawful; he reasonably relied on Officer Hoss's decision to arrest.
  6. Wolterman's negligent-supervision claim against Sheriff Baloun and Dickinson County failed because he did not establish that Deputy Syverson engaged in wrongful or tortious conduct.
  7. Dickinson County was not liable under respondeat superior because Wolterman failed to establish that Deputy Syverson acted negligently.

Questions Presented

  1. Whether Deputy Syverson violated Wolterman's Fourth Amendment rights by conducting an investigative stop without reasonable suspicion.
  2. Whether Deputy Syverson violated Wolterman's Fourth Amendment rights by assisting in Wolterman's arrest without independently establishing probable cause.
  3. Whether the absence of a constitutional violation defeated Wolterman's Monell claim against Sheriff Baloun and Dickinson County.
  4. Whether Deputy Syverson was liable for false arrest under Iowa law.
  5. Whether Sheriff Baloun and Dickinson County were liable for negligent supervision under Iowa law.
  6. Whether Dickinson County was liable under respondeat superior for negligence by Deputy Syverson.

Disposition

affirmed

Cases Cited (17)

  • Fatemi v. White, 775 F.3d 1022, 1040 (8th Cir. 2015)(followed)
  • Monell v. Department of Social Services of New York City, 436 U.S. 658 (1978)(followed)
  • De Mian v. City of St. Louis, 86 F.4th 1179, 1182 (8th Cir. 2023)(followed)
  • Flores v. United States, 689 F.3d 894, 902 (8th Cir. 2012)(followed)
  • Pearson v. Callahan, 555 U.S. 223, 231 (2009)(followed)
  • Ashcroft v. al-Kidd, 563 U.S. 731, 743 (2011)(followed)
  • Stanley v. Finnegan, 899 F.3d 623, 627 (8th Cir. 2018)(followed)
  • Terry v. Ohio, 392 U.S. 1, 30 (1968)(followed)
  • Heien v. North Carolina, 574 U.S. 54, 60 (2014)(followed)
  • United States v. Quinn, 812 F.3d 694, 697-99 (8th Cir. 2016)(followed)

Showing top 10 of 17.

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