People v. Aguirre

S175660 · Supreme Court of California · August 28, 2025 · No. S175660

Summary

The California Supreme Court reviews Jason Alejandro Aguirre’s convictions for murder, attempted murder, gang participation, and related enhancements and special-circumstance findings. The court reverses the conviction for active gang participation, all gang-related enhancements and findings, and the judgment of death because Assembly Bill No. 333 retroactively heightened the proof required for a pattern of criminal gang activity and the jury was not properly instructed. The court otherwise affirms the judgment and rejects Aguirre’s preserved claims concerning jury selection, accomplice corroboration, third-party culpability, DNA testing, admission of statements and writings, witness exclusion, and prosecutorial misconduct.

Court
Supreme Court of California
Writing for the Court
Chief Justice Guerrero; Justice Corrigan; Justice Kruger; Justice Groban; Justice Jenkins
Jurisdiction
Supreme Court of California
Decision date
August 28, 2025
Docket number
S175660
Procedural posture
Automatic appeal from a judgment imposing the death penalty following convictions for murder, attempted murder, active participation in a criminal street gang, and possession of a firearm by a convicted felon.
Standard of review
The court reviewed the Batson/Wheeler ruling for substantial evidence and with deference to the trial court; reviewed denial of a continuance for abuse of discretion; and reviewed instructional-error and ineffective-assistance claims under the applicable legal standards described in the opinion.
Precedential value
Published California Supreme Court opinion; precedential.
Parties
Jason Alejandro Aguirre v. The People
Disposition
reversed

Topics

criminal procedurejury selectionevidenceappellate procedurestatutory interpretation

Practice areas

criminal lawcriminal procedurecapital punishmentevidenceappellate practice

Questions Presented

  1. Whether the prosecution's peremptory challenge of an African-American prospective juror violated Batson v. Kentucky and People v. Wheeler.
  2. Whether the accomplice testimony was sufficiently corroborated under Penal Code section 1111.
  3. Whether the trial court had a sua sponte duty to instruct the jury regarding third-party culpability and the reasonable-doubt burden of proof.
  4. Whether trial counsel was ineffective for failing to request a third-party-culpability instruction.
  5. Whether the trial court abused its discretion or violated due process by denying a continuance to investigate an error in the collection and attribution of DNA evidence.

Holdings

  1. The trial court properly denied the Batson/Wheeler motion because substantial evidence supported its finding that the prosecutor's stated reasons for exercising the peremptory challenge were race-neutral and not pretextual.
  2. The accomplice testimony was adequately corroborated by independent evidence tending to connect Aguirre with the charged crimes.
  3. The trial court was not required to give a sua sponte instruction specifically explaining how evidence of third-party culpability relates to the prosecution's burden of proof.
  4. Aguirre failed to establish ineffective assistance of counsel because counsel could reasonably have regarded the existing instructions as adequate and the additional instruction as repetitive or potentially confusing, and no prejudice was shown.
  5. The trial court acted within its discretion and did not violate due process by denying the requested four-week continuance.

Key quotations

We reverse the judgment of death because of retroactive changes in the law made by Assembly Bill No. 333 (2021–2022 Reg. Sess.) (Stats. 2021, ch. 699) (Assembly Bill 333). (2-3)
The conviction for active participation in a criminal street gang and all of the gang enhancement and gang-murder special-circumstance findings therefore must be reversed. (2-3)
No additional instructions were required. (56)

Factual background

In August 2003, members of the Dragon Family/Dragon Family Junior gang pursued a family they mistakenly believed belonged to a rival gang. After the family parked in a residential cul-de-sac, a shooter approached their vehicle, broke a window, and fired several shots, killing 13-year-old Minh Tran and wounding Tran's brother and cousin. Accomplice testimony, eyewitness testimony, phone evidence, writings, and other circumstantial evidence identified Aguirre as the shooter. Aguirre was arrested in Arizona approximately seven months later.

Procedural history

A jury convicted Aguirre of murder, two counts of attempted murder, and active participation in a criminal street gang, found firearm and gang enhancements true, and found true a gang-murder special circumstance. In a bifurcated bench trial, the court found Aguirre guilty of being a felon in possession of a firearm. The jury returned a death verdict, and the trial court denied the automatic motion to modify the verdict. The California Supreme Court reversed the judgment of death and the gang-related conviction and findings because Assembly Bill No. 333 retroactively heightened the proof required for a pattern of criminal gang activity, while otherwise affirming the judgment.

Remand instructions

The judgment of death, the conviction for active participation in a criminal street gang, all gang enhancements, and the gang-murder special-circumstance finding are reversed. The remainder of the judgment is affirmed; the provided excerpt does not state additional remand instructions.

Court Document

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