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2020 IL App (2d) 180073-U
Ill. App. Ct.
2020
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Background

  • On Nov. 29–30, 2013, Giovanni Galicia was shot dead while seated in a Chevrolet Impala; two masked men approached from a tan Lincoln Navigator and one opened fire.
  • Police chased the Navigator into Rockford; when it stopped occupants fled. Officers recovered a Glock with extended magazine on the driver’s seat of the Navigator and a revolver nearby.
  • Cheyanne Patton (Navigator occupant) later identified defendant Anthony Perez (nicknamed “Shadow”) as a participant and testified he returned to the vehicle saying he’d shot the victim; three codefendants were arrested at or near the scene.
  • Forensics: all casings matched the recovered Glock; fingerprint and DNA results were mixed/inconclusive; ski‑mask DNA unsuitable for identification.
  • Two jailhouse informants (Pena and Brooks) testified Perez confessed to them. Sprint records and an FBI historical cell‑site analysis (Raschke) linked a phone number the State associated (circumstantially) with Perez to locations consistent with the shooting and chase.
  • A jury convicted Perez of multiple counts including first‑degree murder and found he personally discharged the firearm; the trial court sentenced him to an aggregate 95 years. Perez appealed on several evidentiary and sufficiency grounds.

Issues

Issue Plaintiff's Argument (State) Defendant's Argument (Perez) Held
Sufficiency of the evidence to prove Perez was the shooter/4th Navigator occupant Combined testimony (Patton), jailhouse informants, cell‑site and gang evidence together established presence, motive, and weapon control Evidence was unreliable: accomplice/jailhouse witnesses untrustworthy, cell‑site data flawed, no eyewitness ID of Perez Conviction affirmed — viewed cumulatively the circumstantial and testimonial evidence was sufficient under Jackson/Collins standard
Whether defendant’s proposed cellular expert (Kennedy) was qualified State: Kennedy lacked training/experience in cell‑site analysis; court should exclude him Perez: Kennedy had relevant RF/telecom background and prior expert work; exclusion was error Court did not abuse discretion excluding Kennedy under Rule 702 — Kennedy’s credentials did not reasonably show expertise in historical cell‑site analysis
Admissibility and scope of Washburn’s and Raschke’s cell/phone testimony (including hearsay/disclaimer issues) Sprint records, phone extractions, and Raschke’s plotted arcs were admissible and properly caveated; any limitations were for cross‑examination and weight Errors: admitted hearsay from phone extractions, Raschke overstepped by opining on phone being in Navigator and downplaying Sprint’s disclaimer No reversible error: much extraction data was machine‑generated (not hearsay); the limited hearsay (owner/contact labels) was harmless given other non‑hearsay links; Raschke properly qualified his opinions and did not assert precise locations
Admission of gang evidence and Pena’s Facebook testimony (and related social‑media evidence) Gang evidence provided motive/context; Facebook photos corroborated defendant’s appearance and gun possession Gang testimony and Facebook evidence improperly attacked character, were prejudicial, and some testimony was expert/impermissible; Facebook‑photograph testimony was unreliable Appellate court found defendant forfeited many specific challenges by failing to preserve them in posttrial motion and made conclusory plain‑error arguments; therefore those claims were not reviewed on the merits

Key Cases Cited

  • People v. Collins, 106 Ill.2d 237 (sufficiency standard and appellate review of evidence)
  • Jackson v. Virginia, 443 U.S. 307 (constitutional standard for sufficiency of the evidence)
  • People v. Cunningham, 212 Ill.2d 274 (when reviewing courts may reject testimony as inherently unbelievable)
  • People v. Lovejoy, 235 Ill.2d 97 (standard for qualifying expert witnesses under Rule 702)
  • Frye v. United States, 293 F. 1013 (general‑acceptance test context discussed re: scientific evidence admissibility)
  • United States v. Hill, 818 F.3d 289 (7th Cir. discussion of expert cell‑site testimony and opinion scope)
  • People v. Piatkowski, 225 Ill.2d 551 (plain‑error framework)
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Case Details

Case Name: People v. Perez
Court Name: Appellate Court of Illinois
Date Published: Jan 28, 2020
Citations: 2020 IL App (2d) 180073-U; 2-18-0073
Docket Number: 2-18-0073
Court Abbreviation: Ill. App. Ct.
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    People v. Perez, 2020 IL App (2d) 180073-U