Fabrication, Malicious Prosecution, and Brady Claims Fail Where Probable Cause Exists and “Suppressed” Facts Were Disclosed or Nonexistent

I. Introduction

In Kevin Lackey v. L.T. Hurley (6th Cir. Sept. 9, 2026), Kevin Lackey—a man convicted in 1993 of Michigan criminal sexual conduct and breaking and entering—sued multiple Detroit police officers under 42 U.S.C. § 1983 after his convictions were later vacated due to “profound defects” in dog-tracking evidence. Lackey alleged that officers fabricated inculpatory evidence, maliciously prosecuted him, and suppressed exculpatory evidence in violation of the Fourth and Fourteenth Amendments.

The central issues on appeal were whether the officers violated clearly established constitutional rights and, if not, whether qualified immunity entitled them to summary judgment.

II. Summary of the Opinion

The Sixth Circuit affirmed summary judgment for Officers Hurley, Beard, Smith, and Burton on qualified-immunity grounds. The court held:

  • Lackey’s Fourteenth Amendment fabrication-of-evidence theory failed because he could not show the alleged fabrications likely affected the jury’s verdict.
  • Lackey’s Fourth Amendment fabrication-of-evidence and malicious-prosecution claims failed because probable cause supported his prosecution and pretrial detention even assuming disputed details.
  • Lackey’s Brady claim failed because the asserted “exculpatory” information was either provided to the defense (photos, reports) or amounted to arguments about the weight/implications of evidence rather than suppressed facts; and an additional alternate-suspect theory was forfeited.

III. Analysis

A. Precedents Cited

1. Qualified immunity framework and summary judgment posture

  • Burnett v. Griffith supplied the standard of review: de novo review of summary judgment based on qualified immunity.
  • Cotton v. Hughes and Salter v. City of Detroit anchored the two-part test requiring a plaintiff to show (1) a constitutional violation and (2) clearly established law at the time.

2. Fabrication-of-evidence doctrine (distinct Fourth vs. Fourteenth Amendment theories)

  • Clark v. Abdallah was the opinion’s doctrinal backbone, distinguishing:
    • Fourteenth Amendment fabrication claims focused on the “adjudicative process” and require knowing fabrication plus a showing the evidence “likely affected” the jury’s decision.
    • Fourth Amendment fabrication claims concern seizures/detention where probable cause “rests on fabricated evidence” presented to a grand jury or judge.
  • Tanner v. Walters reinforced that Fourteenth Amendment fabrication claims hinge on the potential effect of fabricated evidence on the trier of fact.
  • Jackson v. City of Cleveland supplied a key causation/materiality constraint: if the alleged fabrication was not presented to the jury (or otherwise did not affect the verdict), liability does not attach.
  • Ingraham v. Wright supported the due process principle that imprisonment requires due process, framing the liberty interest underlying the Fourteenth Amendment claim.

3. Fourth Amendment seizure and probable cause

  • Torres v. Madrid and Bailey v. United States grounded the opinion’s statement that detention is a “seizure” and that seizures require probable cause.
  • Manuel v. City of Joliet was used for the proposition that detention without probable cause violates the Fourth Amendment.
  • District of Columbia v. Wesby supplied the operative definition of probable cause as a “probability or substantial chance” of criminal activity—“not a high bar.”
  • Lester v. Roberts was repeatedly invoked for (a) qualified immunity when officers reasonably (even if mistakenly) conclude probable cause exists, and (b) the elements of Fourth Amendment malicious prosecution.
  • Ahlers v. Schebil and Provience v. City of Detroit supported reliance on eyewitness statements: such statements are generally presumed reliable, and even vague/inconsistent accounts can still support probable cause.
  • Newman v. Township of Hamburg supplied an important limiting principle: probable cause is not proof beyond a reasonable doubt.
  • Logsdon v. Hains supported the “no further duty to investigate” rule once probable cause is established, rejecting an expectation that officers must search for or compile additional exculpatory evidence after probable cause exists.

4. State-law elements to evaluate probable cause for charged offenses

  • People v. Green (as recognized in part by People v. Marshall) provided Michigan elements for first- and second-degree criminal sexual conduct (penetration/contact plus force).
  • People v. Brownfield supplied the elements of breaking and entering an occupied dwelling with intent to commit a felony.

5. Malicious prosecution and favorable termination

  • Chiaverini v. City of Napoleon was cited to frame malicious prosecution as charging without probable cause leading to an unreasonable seizure; the court used it to emphasize that probable cause defeats the claim.

6. Brady doctrine and police disclosure obligations

  • Brady v. Maryland provided the constitutional rule against suppression of material favorable evidence.
  • Strickler v. Greene (quoted via Jackson v. City of Cleveland) supplied the three elements of a Brady claim (favorability, suppression, and prejudice).
  • Moldowan v. City of Warren supported the Sixth Circuit’s rule that police must turn over exculpatory evidence to prosecutors, and the prosecutor must disclose to the defense.
  • Salter v. City of Detroit was used to treat police and prosecutors “the same way” for Brady purposes in assessing due process obligations.
  • Hughbanks v. Hudson supplied the limiting principle: no Brady violation if the defendant knew/should have known the essential facts or the information was available from another source.
  • Bannister v. Knox Cnty. Bd. of Educ. supported forfeiture: arguments not properly raised below are generally not considered on appeal absent a plain miscarriage of justice.

B. Legal Reasoning

1. Fourteenth Amendment fabrication: “likely affected” the verdict

Applying Clark v. Abdallah and Tanner v. Walters, the court required Lackey to show knowing fabrication and a reasonable likelihood that the fabrication affected the jury’s conviction. The court found no such likelihood:

  • As to Officer Hurley, Lackey could not connect Hurley’s actions to evidence presented at trial; Hurley did not testify, and Lackey could not show trial use of her alleged fabrications, invoking the causation principle from Jackson v. City of Cleveland.
  • As to the assailant’s race, even if officers recorded “black” inaccurately, the jury heard the same information directly from Cynthia, independently of the officers, cutting off the “likely affected” showing.
  • As to the handgun detail, the allegedly fabricated “blue steel handgun” appeared in a report but was not presented to the jury by Officer Smith; no gun charge was brought and the detail was unnecessary to conviction, again failing Jackson’s verdict-impact requirement.

2. Fourth Amendment fabrication and malicious prosecution: probable cause defeats both

The court treated Lackey’s Fourth Amendment claims as turning on whether probable cause supported his detention and prosecution. Using District of Columbia v. Wesby and Lester v. Roberts, it held probable cause existed given:

  • An eyewitness description (clothing, build, age, facial hair) that generally carries a presumption of reliability under Ahlers v. Schebil.
  • Corroborating circumstances: proximity of Lackey’s home; temporal proximity; and the K-9 track to Lackey.

The court rejected Lackey’s attempt to undermine probable cause by pointing to what he claimed officers “omitted” (no barking dog, no muddy prints inside, sisters not waking). It reasoned those were not “omitted facts” but rather asserted inferences from an absence of evidence. Citing Logsdon v. Hains, the court emphasized that once probable cause exists, officers have no further duty to investigate or search for exculpatory evidence. It also stated it would be impractical to require officers to “catalogue” nonexistent evidence.

Having found probable cause, the court held the malicious-prosecution claim failed as a matter of law under Lester v. Roberts and Chiaverini v. City of Napoleon, because lack of probable cause is an element of the claim.

3. Brady claim: disclosure of facts vs. duty to construct defense arguments

The court applied Brady v. Maryland as operationalized by Strickler v. Greene (via Jackson v. City of Cleveland) and the “defendant knew/should have known” limitation from Hughbanks v. Hudson. It held there was no suppression:

  • Photos of the home/window and photos of Lackey’s shoes were turned over.
  • Reports included information about the backyard dog and the sleeping sisters.

The court’s key move was conceptual: Brady requires disclosure of favorable facts, not that officers provide the defense with the interpretive argument that the facts prove the prosecution’s theory is impossible. In the court’s formulation, officers “armed” Lackey with information; it was the defense’s job to “characterize it.”

The court also refused to consider an alternate-suspect Brady theory (involving S.S.’s father) because it was not properly pleaded or defended at summary judgment, applying forfeiture principles from Bannister v. Knox Cnty. Bd. of Educ.

C. Impact

This published Sixth Circuit decision is likely to have practical impact in three recurring § 1983 areas:

  • Sharper “verdict effect” screening for Fourteenth Amendment fabrication claims: plaintiffs must connect alleged fabrication to trial evidence and show it likely affected the outcome, especially where the same fact came in through an independent witness.
  • Probable cause as a broad shield for Fourth Amendment fabrication and malicious prosecution: where officers have an eyewitness description plus corroboration, courts may find probable cause despite later revelations undermining particular investigative techniques (here, dog tracking).
  • Brady narrowed to nondisclosure of facts, not nondisclosure of “defense theory”: litigants can expect courts to reject Brady claims framed as failures to explain why known evidence is exculpatory, particularly when the defense possessed the underlying material.

IV. Complex Concepts Simplified

  • Qualified immunity: a defense protecting officials from damages unless their conduct violated a constitutional right that was clearly established at the time.
  • Probable cause: a “substantial chance” or “probability” that a person committed a crime; it is lower than proof beyond a reasonable doubt.
  • Fabrication of evidence (Fourteenth Amendment): focuses on whether knowingly false evidence likely affected the jury’s verdict (trial fairness).
  • Fabrication of evidence (Fourth Amendment): focuses on whether fabricated evidence was necessary to probable cause presented to a judge or grand jury (the legality of detention).
  • Malicious prosecution (Fourth Amendment in this context): a claim that officials caused prosecution and a liberty deprivation without probable cause, ending favorably to the plaintiff.
  • Brady material: favorable evidence (exculpatory or impeaching) that the State suppressed and that mattered to the outcome; no violation occurs if the defense already knew or had access.

V. Conclusion

Kevin Lackey v. L.T. Hurley reinforces that § 1983 liability for investigative misconduct is tightly tethered to (1) trial impact for Fourteenth Amendment fabrication, (2) the presence or absence of probable cause for Fourth Amendment seizure-based claims, and (3) actual suppression of favorable facts (not undisclosed arguments) for Brady claims. The opinion’s practical message is that later invalidation of a conviction—especially due to flaws in a particular evidentiary technique—does not itself establish constitutional tort liability where probable cause and disclosure standards were satisfied at the relevant time.