The Grand Jury Just Went Public — Now What?

Most people picture grand jury proceedings as secretive, closed door affairs where prosecutors build cases in the shadows. That picture is mostly accurate. But California law carves out a notable exception that can dramatically change the stakes for anyone under investigation.

California Penal Code 939.1 gives courts the authority to order grand jury sessions open to the public under specific circumstances. If you or someone you care about is being investigated by a grand jury and those proceedings have become — or are becoming — public, understanding this law is not optional. It is essential.

This post breaks down exactly how Penal Code 939.1 works, what triggers a public grand jury session, how the process unfolds, and most importantly, what it means for your defense.

What Is California Penal Code 939.1?

At its core, Penal Code 939.1 is a limited exception to the rule that grand jury investigations happen behind closed doors. The statute allows grand jury proceedings to be opened to the public when the subject matter rises to a level of public concern that the court finds significant enough to warrant transparency.

The law requires a joint written request from two specific parties: the grand jury foreman and either the attorney general or the district attorney. This is not something a private citizen or even a target of the investigation can initiate. The request must then be filed with the superior court.

From there, a judge reviews whether the subject matter meets a defined legal threshold. That threshold is not low. The investigation must touch on the general public welfare, specifically involving alleged corruption, misfeasance or malfeasance in office, or dereliction of duty by public officials or public employees. The law also covers private individuals allegedly acting in conjunction or conspiracy with those officials.

If the court makes the required findings, it issues a written order directing the grand jury to conduct its investigation in an open session. The grand jury must comply.

The Legal Threshold: Why "Public Welfare" Matters

The phrase "general public welfare" is doing a lot of legal work in this statute. Not every investigation involving a government employee meets this standard. The alleged misconduct has to be the kind that directly implicates how public institutions are being run or abused.

Think elected officials accused of taking bribes. Think city employees allegedly steering contracts to companies in exchange for personal benefit. Think law enforcement officers accused of conspiracy. These are the categories of conduct that Penal Code 939.1 was designed to address.

From a defense perspective, the threshold matters enormously. If you believe the government is using a public grand jury proceeding to apply political pressure or generate media coverage rather than to legitimately serve the public interest, there may be grounds to challenge the court's findings. The order must state the court's finding on the record. That requirement exists for a reason — it creates a reviewable record.

An experienced criminal defense attorney can examine whether the order satisfies the statutory requirements and whether the investigation truly fits within the scope the law contemplates. For more on how a skilled defense team approaches grand jury matters, visit The Bulldog Law Blog.

How a Public Grand Jury Session Actually Works

Once the court issues the order, the proceedings open to the public but the structure of the investigation does not fundamentally change. The examination of witnesses is conducted by grand jury members and the district attorney. This is not a forum where defense counsel gets to cross examine witnesses or present a counter narrative in real time.

That asymmetry is one of the most challenging features of the grand jury process in general, and public sessions do not fix it. The deck is stacked in the prosecution's favor by design. Grand jury proceedings were never meant to be adversarial in the traditional sense.

What the public can observe is the questioning of witnesses and the presentation of evidence. What they cannot observe is the deliberation and voting. Those steps happen in private, as the statute explicitly requires. Indictments can be based entirely on evidence introduced during the public session, or on a combination of public and private session evidence.

The Defense Perspective: Why Early Action Is Critical

If you know or suspect you are the target of a grand jury investigation, whether public or private, the window to act strategically is narrow. Waiting for an indictment to arrive before retaining counsel is one of the most costly mistakes a person can make.

Public proceedings add another layer of urgency. Once hearings become open, information enters the public record and the press begins covering the story. Reputations take damage in real time. Witnesses who might have otherwise been willing to cooperate or provide context become reluctant to be seen as aligned with someone under public scrutiny. The social and professional consequences of a public investigation can cause serious harm long before any verdict is reached.

A defense attorney who gets involved early can do things that simply are not possible after an indictment drops. Counsel can monitor the proceedings, review the order issued by the court, evaluate whether the investigation falls within the proper scope of Penal Code 939.1, and begin building the foundation of a defense while evidence is still fresh and before the narrative gets locked in.

For a deeper look at how defense attorneys approach pre indictment strategy, The Bulldog Law Blog offers resources specifically built around this phase of criminal cases.

What "Conspiracy With Public Officials" Actually Means for Private Citizens

One of the most important and often overlooked aspects of Penal Code 939.1 is that private individuals can be swept into a public grand jury investigation. The statute expressly covers people allegedly acting in conjunction or conspiracy with public officials involved in the underlying misconduct.

This means a business owner who received a city contract, a contractor who allegedly overbilled a public agency, or a consultant who may have facilitated improper payments could find themselves examined in an open public session alongside the government employees at the center of the investigation.

Private citizens often assume that because they do not hold public office, a statute like this does not apply to them. That assumption can be dangerous. If prosecutors believe a private party played a role in the alleged corruption or helped enable the dereliction of duty at issue, the law covers them too.

Protecting Your Rights When the Grand Jury Goes Public

Grand jury investigations involving public officials tend to attract serious prosecutorial resources and significant media attention. The combination creates pressure that is difficult to manage without experienced legal support.

Penal Code 939.1 gives the government a powerful tool. It also creates specific procedural requirements that must be followed — requirements that a skilled defense attorney can use to protect a client's rights and challenge overreach where it exists.

If you or your business is connected to a public grand jury proceeding, do not wait to speak with an attorney. The sooner you have counsel involved, the more options you have.

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