Motion to Disclose a Confidential Informant in Texas

What a Motion to Disclose a Confidential Informant Is

A motion to disclose a confidential informant asks the trial court to compel the State to name a person who secretly supplied information to law enforcement. In Texas, the request is governed by Rule of Evidence 508, which recognizes an informer's-identity privilege but also lists the situations in which that privilege must give way.

The privilege belongs to the public entity, meaning the State or a law enforcement agency, and not to the informer personally. Its purpose is practical: people are more willing to report crime when they know their anonymity will be protected. Texas courts inherited this idea from federal law and codified it in Rule 508(a).

The privilege is qualified, not absolute. Rule 508(c) sets out three exceptions:

Voluntary disclosure

The privilege ends once the informer's identity is disclosed or the informer testifies for the State (Rule 508(c)(1)).

Testimony on guilt or innocence

The privilege yields when the informer may give testimony necessary to a fair determination of guilt or innocence (Rule 508(c)(2)).

Legality of obtaining evidence

The privilege yields at a suppression hearing when the judge is not satisfied the informer was reliable or credible (Rule 508(c)(3)).

Rule 508 addresses identity. Separate discovery duties may also apply. Under the Michael Morton Act, Code of Criminal Procedure article 39.14(h) requires the State to hand over exculpatory, impeachment, and mitigating material, and article 39.14(h-1) requires disclosure of credibility information about certain confined witnesses. Those statutory duties run alongside, but do not replace, the Rule 508 privilege analysis.

Two Key Exceptions: Guilt-Innocence Versus Suppression

Texas Rule of Evidence 508(c) contains two exceptions that matter most to the defense. The first, subsection (c)(2), applies when the informer may testify about guilt or innocence. The second, subsection (c)(3), applies when the informer's tip is used to justify a search or arrest and the judge doubts the informer's reliability.

Under Rule 508(c)(2), the question is whether the informer can give testimony necessary to a fair determination of guilt or innocence. This exception looks at the merits of the case, for example whether the informer saw the alleged drug sale. Under Rule 508(c)(3), the question is narrower: it arises at a suppression hearing when the State relies on the informer to establish probable cause and the judge is not satisfied the information was reliable or credible.

The distinction controls both the procedure and the remedy, so a well-drafted motion states which exception it invokes. The table below summarizes the differences.

McCray v. Illinois shows why the suppression path is harder. The Supreme Court held that neither due process nor the Confrontation Clause forces the State to name an informer at a probable-cause hearing when the judge is satisfied that officers relied on a reliable source.

The Plausible-Showing Threshold

The defense carries the initial burden. To unlock either exception, the accused must make a plausible showing that the informer may be able to give testimony necessary to a fair determination of the case. The Texas Court of Criminal Appeals set this standard in Bodin v. State.

The bar is deliberately modest. Because a defendant usually cannot know what a secret informer would say, Bodin held that the accused need only show how the informer's information may be important, using evidence from some source but not mere conjecture or speculation. In Lerma v. State, the court reaffirmed that this burden is not a high one, yet still requires more than guesswork.

Certain facts make the showing easy. When the record shows the informer was an eyewitness to, or a participant in, the charged transaction, that alone can establish that the informer could give necessary testimony. In Anderson v. State, an officer's testimony that the informer was present during the drug delivery satisfied the threshold.

The potential testimony must also significantly aid the defense. A tipster who merely pointed police toward a suspect, but who never witnessed the offense, usually will not meet the standard. The closer the informer sits to the actual events, the stronger the motion.

Procedure and the In Camera Hearing

Rule 508 builds in a private, judge-only step so the court can test the informer's knowledge without exposing the name prematurely. The process unfolds in a predictable order.

1. Written motion. The defense files a motion to disclose, identifying the exception and the facts supporting a plausible showing.
2. State invokes the privilege. The prosecutor asserts Rule 508(a) to withhold the identity.
3. In camera showing. Once the defense makes its plausible showing, Rule 508(c)(2)(C) directs the court to give the State an opportunity to show, in camera, facts relevant to whether the informer can in fact supply the testimony.
4. Ruling. The judge decides whether the informer's identity must be disclosed.

The in camera hearing is held outside the presence of the jury and, typically, outside the presence of the defense. The State may submit affidavits or testimony describing what the informer knows. That material is sealed and preserved for appellate review, so a higher court can later evaluate the decision without destroying the confidentiality the rule protects.

In Bodin, the Court of Criminal Appeals clarified that although the State's invocation of the privilege triggers the in camera procedure, nothing in the rule limits who may request the hearing. What earns the hearing is the defendant's showing of possible necessity, not the label the parties attach to their filings.

The Remedy: Disclosure or Dismissal

The rule gives the State a choice rather than a command to reveal the source. If the court finds a reasonable probability that the informer can give testimony necessary to a fair determination of guilt or innocence, the State may either disclose the identity or keep it secret and accept the consequence.

When the State elects secrecy, Rule 508(c)(2)(A) requires the court, on the defendant's motion, to dismiss the charges to which the testimony would relate. The Court of Criminal Appeals applied this remedy in Lerma v. State, where the trial court dismissed a capital-murder charge after the State declined to produce a necessary informer. Disclosure and dismissal are thus two sides of the same ruling.

The remedy differs on the suppression track. Under Rule 508(c)(3), if the State relies on the informer to prove probable cause and will not satisfy the judge that the informer was reliable, the court may suppress the evidence obtained through the search or arrest rather than dismiss the case outright.

Rule 508 does not authorize sanctions beyond these outcomes. The defense cannot use the motion to punish the State; the rule simply balances the informer's anonymity against the accused's right to a fair proceeding.

The Roviaro Balancing Test and Federal Roots

Texas's rule grew out of the United States Supreme Court's decision in Roviaro v. United States. The Court refused to adopt a fixed rule and instead described when the privilege must yield:

Where the disclosure of an informer's identity, or of the contents of his communication, is relevant and helpful to the defense of an accused, or is essential to a fair determination of a cause, the privilege must give way.

Under Roviaro, courts balance the public interest in protecting the flow of information against the individual's right to prepare a defense, weighing the crime charged, the possible defenses, and the potential significance of the informer's testimony. When the informer was the sole participant, other than the accused, in the transaction charged, disclosure is especially likely.

Before Rule 508, Texas courts required disclosure only when the informer participated in the offense, was present at the offense or arrest, or was otherwise a material witness. As Bodin and Anderson explain, Rule 508(c)(2) is broader: it asks only whether the informer's testimony may be necessary to a fair determination of guilt or innocence, without confining the inquiry to those three categories.

Federal courts still apply the Roviaro balancing test directly, so the decision remains persuasive authority when a Texas motion invokes the shared roots of the privilege.

Standard of Review on Appeal

A trial court's ruling on a motion to disclose is reviewed for abuse of discretion. As the Court of Criminal Appeals restated in Lerma v. State, this deferential standard requires the appellate court to view the evidence in the light most favorable to the trial court's ruling and to uphold it unless it falls outside the zone of reasonable disagreement.

That deference cuts both ways. A defendant who made a strong plausible showing that the trial court brushed aside has a real appellate argument. A defendant who offered only speculation will struggle, because the record supports the judge's decision to keep the name secret.

If an appellate court does find error, it conducts a harm analysis. In Anderson v. State, the court explained that reversal turns on the probable impact of the error, asking whether a rational juror might have reached a different result had the informer's testimony been available. Preserved error and a well-developed record are therefore essential to a successful appeal.

Where This Motion Fits in a Texas Case

The motion most often appears in narcotics prosecutions built on a controlled buy or a tip that led to a search warrant. In those cases the informer may be the only non-officer witness to the alleged crime, which is exactly when Rule 508(c)(2) has the most force.

Timing matters. Defense counsel usually files the motion pretrial, frequently alongside a motion to suppress, so the court can resolve identity and probable-cause questions together. Filing early also preserves the issue for appeal and gives the court time to conduct any in camera hearing before trial.

The motion works in tandem with other tools. A motion to suppress attacks the search, a discovery request under article 39.14 seeks the State's file including exculpatory and impeachment material, and the Rule 508 motion targets the one thing discovery statutes usually protect: the informer's name. Used together, they map the strength of the State's case.

L and L Law Group, PLLC, a criminal-defense firm in Frisco, Texas, handles these motions as part of trial preparation. General questions about how Rule 508 applies to a specific set of facts should be directed to a licensed Texas attorney, because the outcome depends heavily on the informer's role in the events charged.

Common Situations & Variations

This motion comes up in several recurring situations. Each guide below walks through a specific fact pattern, the governing standard, and how Texas courts have handled it.

What the Case Law Says

These decisions—verified against primary sources—control how this motion is litigated. Every case still turns on its own facts.

• Roviaro v. United States, 353 U.S. 53 (1957) — The government's informer-identity privilege must yield when disclosure is relevant and helpful to the defense or essential to a fair determination of the cause.
• Bodin v. State, 807 S.W.2d 313 (Tex. Crim. App. 1991) — A defendant need only make a plausible showing that the informer's testimony may be necessary to guilt or innocence to trigger an in camera hearing.
• McCray v. Illinois, 386 U.S. 300 (1967) — Neither due process nor confrontation requires disclosing an informer's identity at a probable-cause suppression hearing when the judge is satisfied the informer was reliable.
• Lerma v. State, 639 S.W.3d 63 (Tex. Crim. App. 2021) — The plausible-showing burden needs evidence, not conjecture, but is not high; if the State refuses a required disclosure, the court dismisses the related charges.

General summaries of published opinions for information only — not predictions about any specific case.