This lawsuit was originally filed on behalf of five persons, each of whom was unjustly arrested and imprisoned—up to 26 days in one case—in a “mistaken identity” arrest. In each case, Denver law enforcement officers had legal grounds to arrest a particular suspect for an offense, but instead they arrested or caused the arrest of one of the ACLU’s innocent clients. In each case, the lawsuit asserts, officers deliberately ignored facts that demonstrated that they were arresting or causing the arrest of the wrong person.
The suit asserts that Denver policymakers knowingly tolerated an unjustifiable risk and frequency of such “mistaken identity” arrests, by failing to adopt and enforce policies, procedures, supervision, and training that would have reduced or eliminated that risk. Similarly, the suit contends, Denver failed to adopt procedures, supervision, and training that would promptly detect and correct such “mistaken identity” arrests when they occur.

In early 2009, ACLU lawyers amended the complaint and added a sixth plaintiff.  Days later, ACLU wrote to Denver officials about a seventh ACLU client, Antonio Sanchez, who was languishing in Denver's jail because of a mistaken identify arrest.  He later became ACLU's seventh plaintiff in the case.

Update: As the litigation progressed, some plaintiffs accepted individual monetary settlements and some individually-named defendants were dismissed on grounds of qualified immunity.   Denver moved for summary judgment on ACLU's policy-and-practice claim.  ACLU lawyers filed a 200-page response with dozens of exhibits documenting more than five hundred instances of mistaken-identity arrests over a seven-year period.    While Denver's summary judgment motion was pending, the City paid monetary compensation to the remaining plaintiffs to settle the case. 

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ACLU case number

2007-19

Attorney(s)

Ty Cheung Gee; Mark Silverstein, ACLU of Colorado Legal Director; Taylor Pendergrass, ACLU of Colorado Staff Attorney

Case number

08-CV-1693, United States District Court, District of Colorado