250 F. Supp. 3d 806
D. Colo.2017Background
- Defendant Vincent Mathews, a Colorado "community inmate" subject to GPS ankle monitoring, is charged with Hobbs Act conspiracy for two pawn‑shop robberies (Dec 21, 2015 and Mar 23, 2016).
- Colorado parole officer Aaron Anderson (also assigned to a federal task force) accessed Mathews’s GPS data and shared it with federal investigators; GPS points place Mathews at the pawn shops during the robberies.
- Government executed a search warrant at 1538 Uinta Street on April 5, 2016 and found inculpatory evidence; affidavit relied in part on GPS history and pole‑camera footage.
- Two confidential informants separately identified Mathews from single‑photo presentations drawn from a six‑photo set; Mathews moved to suppress those identifications as unduly suggestive.
- Mathews moved to suppress GPS evidence (warrantless access/sharing), exclude or Daubert‑challenge the Government’s GPS expert, suppress statements after an asserted Miranda invocation, obtain Rule 404(b) disclosures, and obtain a bill of particulars; he also requested an evidentiary hearing.
Issues
| Issue | Plaintiff's Argument (Government) | Defendant's Argument (Mathews) | Held |
|---|---|---|---|
| Lawfulness of parole‑officer access to GPS and sharing with feds | Anderson lawfully obtained GPS data under Colorado supervisory authority and may share legally obtained evidence with other agencies | Anderson acted as a federal investigator; accessing historical GPS on mere suspicion or hunch was a Fourth Amendment search requiring a warrant | Denied suppression: court found limited expectation of privacy for a community inmate under Colorado law; Anderson’s access/sharing lawful under totality of circumstances |
| Admissibility/Daubert challenge to GPS expert and required disclosures | Expert reliable; underlying coordinates undisputed; any accuracy issues for cross‑examination | Defense requests expert analysis/maps and a Daubert hearing to test reliability and foundation for GPS accuracy | Granted in part: Government ordered to produce expert’s plot for March 23, 11:41–12:07, explanations of any plot differences, and expert opinions on ankle‑monitor accuracy; Daubert challenge otherwise denied |
| Validity of search warrant for 1538 Uinta St. | Warrant affidavit supplied probable cause (GPS history, frequent visits, pole camera footage, investigator experience) | Affidavit failed to establish nexus between alleged robberies and residence; attack probable cause | Denied suppression: magistrate’s issuance was not so lacking as to preclude good‑faith reliance under Leon; probable cause support adequate |
| Photo lineup identifications by confidential informants | Identifications are admissible; photos shown singly and coordinates/selection proper for cross | Photo series was impermissibly suggestive (small array, distinct appearance/expressions/hair) leading to unreliable IDs | Denied suppression: court found no undue suggestion viewing photos singly and denied suppression |
Key Cases Cited
- United States v. Knights, 534 U.S. 112 (establishes diminished expectation of privacy from supervisory search conditions and applies a totality‑of‑circumstances reasonableness test)
- United States v. Tucker, 305 F.3d 1193 (10th Cir.) (parole search condition diminishes expectation of privacy; officer’s motive is irrelevant if reasonable suspicion exists)
- Samson v. California, 547 U.S. 843 (authorizes suspicionless searches of parolees where state law clearly authorizes them)
- United States v. Freeman, 479 F.3d 743 (10th Cir.) (state law scope matters; searches by non‑authorized officers without reasonable suspicion may be unconstitutional)
- United States v. Mabry, 728 F.3d 1163 (10th Cir.) (totality of circumstances can render minor deviations from state procedures immaterial)
- United States v. Leon, 468 U.S. 897 (good‑faith reliance on a magistrate’s warrant can preclude suppression)
- United States v. Biglow, 562 F.3d 1272 (10th Cir.) (nexus analysis for residence searches and factors relevant to probable cause)
- United States v. Roach, 582 F.3d 1192 (10th Cir.) (probable cause cannot rest on stale information)
- United States v. Sanchez, 24 F.3d 1259 (10th Cir.) (two‑step analysis for photo arrays: impermissible suggestion then reliability)
- United States v. Lester, 647 F.2d 869 (8th Cir.) (lawfully obtained evidence by one agency may be shared with another without a warrant)