## Facts

- Javier Valle Izazaga was charged with two counts of forcible rape, one count of kidnapping, and related enhancements based on alleged events on June 18, 1990.
- After enactment of Proposition 115, the prosecution sought reciprocal discovery under Penal Code provisions newly added by the initiative.
- The prosecution first served an informal discovery request; when Izazaga refused, the prosecution moved for a formal discovery order.
- The superior court ordered the defense to disclose: (1) names and addresses of witnesses the defense intended to call, (2) relevant written or recorded statements, (3) expert reports, and (4) real evidence the defense intended to offer at trial.
- The Court of Appeal denied Izazaga’s petition for writ relief.
- The California Supreme Court stayed the discovery order and issued an alternative writ to review constitutional challenges to the reciprocal discovery scheme.

## Issues

1. Whether Proposition 115’s reciprocal discovery requirements compelling defense disclosure of intended witnesses and related materials violate the privilege against self-incrimination.
2. Whether the reciprocal discovery scheme violates due process because it is insufficiently reciprocal or otherwise unfair.
3. Whether the disclosure duties impair the right to effective assistance of counsel by chilling defense investigation and strategy.

## Decision

- The California Supreme Court upheld Proposition 115’s reciprocal discovery provisions as constitutional when properly construed and applied.
- The court held the scheme does not violate the privilege against self-incrimination, due process, or the right to effective assistance of counsel.
- The alternative writ was discharged, the peremptory writ denied, and the Court of Appeal’s judgment affirmed, leaving the superior court’s discovery order in effect.

## Legal Principles

- The privilege against self-incrimination protects compelled testimonial communications that are personal to the accused; compelled disclosure of information about defense witnesses and their statements is not necessarily within the privilege.
- Reciprocal criminal discovery is consistent with due process when, viewed as a whole, it provides meaningful two-way disclosure obligations and benefits to both sides.
- Defense disclosure obligations may be limited and conditional, focusing on relevant statements and evidence tied to witnesses the defense intends to call and evidence it intends to introduce, without requiring disclosure of all defense investigation or strategy.
- Courts may restrict or deny discovery upon a showing of good cause and may apply protective measures to prevent prejudice, protect witnesses, and safeguard constitutional rights in case-specific rulings.

## Conclusion

The court sustained California’s voter-enacted reciprocal discovery system, holding that requiring the defense to disclose intended trial witnesses and related materials in exchange for prosecutorial disclosure is constitutionally permissible, subject to statutory limits and protective judicial oversight.


Izazaga v. Superior Court, 54 Cal. 3d 356 (Cal. 1991)