Active Investigation Exemption: What’s Withheld and How to Appeal

Federal agencies can withhold law enforcement records under the active investigation exemption in FOIA, known formally as Exemption 7(A) of the Freedom of Information Act, whenever releasing them could reasonably be expected to interfere with an enforcement proceeding that is pending or reasonably anticipated. The shield is temporary. Once the proceeding ends, the justification for withholding under 7(A) collapses, though other exemptions may still keep parts of the file redacted.

What Counts as an Active Investigation

The statute, 5 U.S.C. § 552(b)(7)(A), lets agencies withhold records compiled for law enforcement purposes when disclosure “could reasonably be expected to interfere with enforcement proceedings.”¹ The phrase does real work. A vague hope that someone might eventually be charged isn’t enough. The agency needs a concrete proceeding either underway or genuinely on the horizon.

In practice, a case qualifies as active when investigators are still pursuing leads, a prosecutor is reviewing evidence to decide on charges, or a grand jury is considering the matter. The proceeding stays active through trial, sentencing, and any direct appeal. Courts have allowed the exemption to reach related proceedings too, such as additional charges against the same defendant or charges against co-conspirators still being developed.²

Simply keeping a file open doesn’t satisfy the standard. If an investigation has stalled, with no active leads, no prosecutor involvement, and no realistic prospect of charges, a court is unlikely to let the agency keep hiding behind 7(A). The exemption is “temporal in nature” and is not meant to permanently protect material just because it sits in an investigatory file.² An agency that can’t point to a specific, prospective proceeding will generally lose if challenged.

What Agencies Typically Withhold

During an active investigation, certain categories of records are almost always off-limits. Witness statements rank near the top. If a suspect learns exactly what a witness told investigators, the risk of intimidation or coordinated stories rises sharply. The same logic reaches grand jury testimony, which carries its own separate secrecy rules beyond FOIA.

Forensic results, including DNA analysis, toxicology reports, and fingerprint comparisons, stay under wraps for a different reason. Premature disclosure lets a suspect know what evidence the government has and, just as importantly, what it doesn’t have. A suspect who knows investigators haven’t matched a fingerprint yet might destroy the surface that carries it.

Internal investigative notes and prosecutor memos reveal the strategic thinking behind the case, showing which leads investigators are prioritizing, which theories they’re pursuing, and where they see weaknesses. Exemption 5 separately protects this kind of deliberative material.³ Physical evidence inventories and crime scene photographs get similar treatment because they often contain “holdback” facts only the perpetrator would know. Investigators rely on those details to test the credibility of confessions and later witness accounts. If they leak, that verification tool disappears.

Undercover officer identities and specific surveillance setups are often protected permanently under Exemptions 7(E) and 7(F), because the safety risk and law enforcement interest don’t end when one case closes.¹

What You Can Usually Still Get

The active investigation exemption is not a blanket shield. Agencies can’t stamp “active investigation” on an entire filing cabinet and walk away. FOIA requires that any reasonably segregable, non-exempt portion of a record be released even when other parts are properly withheld, and the agency must indicate how much information was deleted and which exemption justified each deletion.¹

Basic incident reports (the date, time, location, and general nature of an occurrence) are typically available because they don’t reveal investigative strategy. When someone is arrested, the person’s name, the charges filed, and bail information generally become public. Aggregate crime statistics and incident counts are also routinely accessible.

The operating principle is that withholding must be tied to a specific harm, not just convenience. An agency that redacts the investigative portions of a report while releasing the basic facts is doing it right. An agency that refuses to hand over anything at all usually isn’t.

Why Agencies Don’t Have to Justify Every Page

One feature of Exemption 7(A) that surprises many requesters: agencies don’t have to justify the withholding of each document individually. The Supreme Court has allowed a “generic” approach, where agencies demonstrate that releasing a particular category of records during a particular type of enforcement proceeding would generally cause interference.⁴ So instead of explaining why every single witness interview transcript would cause harm, the agency can argue that releasing witness statements as a category during a pending prosecution would compromise the case.

Even records that look innocuous on their own can be withheld if they would reveal something sensitive when combined with other available information. Courts call this the “mosaic” or “jigsaw puzzle” approach. In a 1982 case, a court found that aggregate data about prescription drug quantities, while seemingly harmless, could serve as a “missing link” for someone with enough background knowledge to piece together protected details.⁵ In the law enforcement context, this means an agency might withhold a bland-looking inventory list or scheduling document if releasing it would let a knowledgeable observer reconstruct the investigation’s scope or direction.

When the Exemption Expires

Exemption 7(A) has a built-in expiration date: the end of the enforcement proceeding. Once charges are dismissed, a defendant is acquitted, a conviction becomes final, or a prosecutor formally declines to bring charges, the rationale for withholding under 7(A) drops away and the records become eligible for release.

Eligible doesn’t mean unredacted. Even after a case closes, agencies routinely black out personal information under Exemption 7(C), which protects against unwarranted invasions of personal privacy and does not expire when the case does. They remove confidential source identities under 7(D), and withhold investigative techniques under 7(E). The file you receive may arrive heavily marked up, but the core factual record (what happened, what evidence was gathered, and how the case was resolved) should be accessible.¹

Cold Cases

Cold cases sit in a gray area. An investigation with no active leads might lie dormant for years or decades. The question is whether there’s still a “concrete possibility” that the investigation could lead to a future proceeding. A hypothetical chance isn’t enough. If the agency has no ongoing oversight, no continuing enforcement responsibility, and no realistic path to prosecution, courts generally won’t let Exemption 7(A) stand.²

That said, a cold case involving an unsolved homicide with no statute of limitations presents a stronger argument for continued withholding than a fraud investigation untouched for a decade. Agencies get more leeway when the underlying crime is serious and the passage of time alone hasn’t foreclosed prosecution. If you’re challenging the withholding of a cold case file, press the agency to explain what concrete investigative steps have occurred recently and whether any proceeding is genuinely anticipated.

When the Agency Won’t Even Say Whether Records Exist

Sometimes an agency won’t just withhold records. It will refuse to acknowledge whether records exist at all. This is called a “Glomar” response, named after a 1970s case involving a CIA salvage ship. In the law enforcement context, a Glomar response is justified when simply confirming that someone appears in investigative files would itself reveal protected information.⁶

If you ask for records about a specific person’s involvement in a fraud investigation, and the agency responds that it has 200 pages of responsive documents but they’re exempt, that confirmation alone tells you the person is under investigation. To avoid that disclosure, the agency says it can “neither confirm nor deny” the existence of records. Federal regulations specifically authorize this approach for records related to law enforcement violations, noting it prevents revealing that an investigation is in progress or may be conducted.⁷

A Glomar response isn’t automatic. The agency must still conduct a search and weigh privacy interests against the public interest in disclosure. It becomes unjustified when the investigation has already been publicly acknowledged through an indictment, a press conference, or a prosecution, because the fact of the investigation is already out. It also generally cannot be used regarding deceased individuals, who have diminished privacy interests.⁶

How to Challenge a Denial

When a federal agency withholds records under Exemption 7(A), you have a structured path to push back. There are three escalating stages, and skipping straight to court isn’t an option. You must exhaust administrative remedies first.

Administrative Appeal

Your first step is an administrative appeal to the head of the agency. FOIA gives you at least 90 days from the date of the denial to file, and your appeal must be in writing. The agency then has 20 business days to decide. If the denial is upheld, the agency must tell you about your right to seek judicial review.¹ Don’t treat this step as a formality. Many agencies release additional records at the appeal stage, especially if you explain clearly why the exemption doesn’t apply to specific documents.

Mediation Through OGIS

At any point during the dispute, you can request help from the Office of Government Information Services. OGIS is a congressionally created mediator that offers dispute resolution between requesters and agencies as an alternative to litigation.¹ The agency’s denial letter must inform you of this option. OGIS can’t force an agency to release records, but its involvement sometimes breaks logjams the formal appeal process doesn’t.

Federal Lawsuit

If the administrative appeal fails, you can file suit in federal district court. You have four venue options: the district where you live, where your principal place of business is located, where the agency records are situated, or the District of Columbia.¹ The court reviews the withholding fresh, and the agency bears the burden of proving the exemption applies. You don’t have to prove it doesn’t.

If you “substantially prevail,” the court can award reasonable attorney fees and litigation costs against the government.¹ You qualify if you win through a court order, an enforceable settlement, or a voluntary change in the agency’s position prompted by your lawsuit. Courts weigh several factors in deciding whether to actually grant fees, including whether the release benefited the public, whether you had a commercial motive, and whether the agency’s withholding was reasonable.⁸ One catch: if you represent yourself and you’re not an attorney, you can recover litigation costs but not attorney fees.

The agency has 20 business days from receipt of your original request to issue a determination.¹ In practice, many agencies miss that deadline on complex law enforcement files that require extensive review for exemptions. A missed deadline doesn’t automatically entitle you to the records, but it does give you the right to treat the delay as a constructive denial and go directly to court or OGIS.

1
Office of the Law Revision Counsel. 5 USC 552 – Public Information
2
U.S. Department of Justice. FOIA Guide: Exemption 7(A)
3
FOIA.gov. Freedom of Information Act: Frequently Asked Questions
4
Congressional Research Service. The Freedom of Information Act (FOIA): A Legal Overview
5
U.S. Department of Justice. FOIA Update: Significant New Decisions
6
U.S. Department of Justice. FOIA Update: OIP Guidance: Privacy Glomarization
7
eCFR. 20 CFR 402.145 – Law Enforcement
8
U.S. Department of Justice. FOIA Guide: Attorney Fees