A sneak and peek warrant is a federal search warrant that lets agents enter your home or business, search it, and leave without telling you at the time. The authority sits in 18 U.S.C. § 3103a, which requires the government to notify you eventually, usually within 30 days of the search, though courts routinely extend that deadline. The Fourth Amendment still applies, and a judge still has to sign off before agents go in. The practical effect is that investigators can document what’s inside your property while keeping the entire investigation hidden from you for weeks or months.
What Agents Must Show a Judge
To get a delayed-notice warrant, agents have to clear two hurdles. The first is ordinary probable cause: a fair probability that evidence of a specific federal crime will be found at the location. A judge reviews a sworn affidavit and decides whether the facts justify the search.
The second hurdle is unique to these warrants. The court must find “reasonable cause to believe that providing immediate notification of the execution of the warrant may have an adverse result.” That phrase has a specific meaning drawn from 18 U.S.C. § 2705, and it sets the bar higher than for a standard warrant because agents are asking to skip the normal rule that you be told your property was searched.
What Counts as an Adverse Result
The statute defines an adverse result as any of these outcomes becoming likely if you learn about the search too soon:
- Endangering someone’s life or safety.
- Flight from prosecution.
- Destruction of or tampering with evidence.
- Intimidation of potential witnesses.
- Otherwise seriously jeopardizing the investigation.
Agents cannot rely on vague claims or boilerplate language. The affidavit has to lay out specific facts explaining why one of these outcomes is likely in the particular case. A judge who finds the reasoning too thin can deny the delayed-notice request while still approving the underlying search warrant, forcing agents to conduct the search with normal notification.
What Agents Can and Can’t Do Inside
The whole point of the warrant is that you shouldn’t realize anyone was there. That goal shapes what agents are allowed to do. Under 18 U.S.C. § 3103a(b)(2), the default rule is that the warrant must prohibit seizing any physical property, electronic communications, or stored digital information. Agents typically photograph evidence, record video, or install monitoring devices instead of taking anything with them.
The exception is when a court specifically finds “reasonable necessity” for a seizure. If agents need to take a physical item or copy electronic files, they have to convince the judge ahead of time that there’s no other way to preserve the evidence. Hauling out boxes of documents or computers would obviously tip you off, so courts approve physical seizures sparingly.
The Fourth Amendment’s particularity requirement applies with full force. The warrant has to describe the specific location to be searched and the specific items or information agents are looking for. In a physical space, that might limit the search to a particular room or safe. For digital searches, the warrant often restricts agents to certain accounts, folders, or date ranges rather than everything on a device or server.
When You Must Be Told
The initial deadline is 30 days from the date agents execute the warrant. Within that window, the government has to serve you with a copy of the warrant along with an inventory of anything that was seized or, in searches where nothing was taken, a description of what was observed. That notice is what preserves your ability to challenge the search afterward.
Extensions and the Missing Hard Cap
If the government believes the reasons for secrecy still hold, it can ask the court for more time. Each extension request requires a fresh showing of good cause, and each extension is supposed to be limited to 90 days or less. The gap in the statute that matters: there is no absolute cap on the total delay. A judge can keep granting 90-day extensions indefinitely as long as the government keeps showing a need for continued secrecy.
In fiscal year 2020, courts approved extended delays beyond the initial 30 days in more than 10,000 cases. The statute uses the word “should” rather than “shall” when describing the 90-day extension limit, and it includes a carve-out allowing even longer individual extensions “if the facts of the case justify” them. The safeguard is judicial oversight at each renewal, not a statutory time limit.
Digital Searches and Provider Gag Orders
When investigators want to search emails, cloud storage, or other data held by a service provider, a separate statute kicks in. Under 18 U.S.C. § 2705, the government can delay notifying you that it obtained your stored communications. The initial delay under this statute can run up to 90 days, and the court can extend it in additional 90-day increments.
The same “adverse result” standard applies. Section 2705 adds another tool: gag orders on the provider itself. A court can order your email provider, cloud storage company, or phone carrier not to tell you that the government obtained a warrant for your data. The provider has to comply for as long as the court deems the order necessary. Even a tech-savvy person checking a provider’s transparency reports or account activity logs may see nothing unusual.
After the delay expires, the government has to give you a copy of the original legal process it used, explain the kind of investigation that prompted the request, tell you the date your information was handed over, and identify the legal authority for the delay.
What You Can Do After You’re Notified
Once you learn your property was searched, you have a few possible responses. None are easy, and the law here favors the government more than most people expect.
Moving to Suppress the Evidence
The most common response is a pretrial motion to suppress evidence, arguing that the warrant was defective or that agents exceeded its scope. If a court finds the warrant lacked probable cause, or that the delayed-notice provision wasn’t legally justified, evidence from the search can potentially be excluded from your criminal case. Your attorney has to identify specific legal defects in the warrant or its execution.
The odds are steep. Motions to suppress succeed in a small fraction of cases overall, and challenging the delayed-notice component specifically is even harder. In Hudson v. Michigan, the Supreme Court held that violating the knock-and-announce requirement does not trigger the exclusionary rule, meaning evidence stays in even when the entry procedure was improper. That case addressed a different scenario, but it signals the Court’s reluctance to throw out evidence over procedural defects in how a search was conducted rather than whether it should have been authorized at all.
Suing for Damages
If federal agents violated your Fourth Amendment rights during the search, you may have a damages claim under Bivens v. Six Unknown Named Agents. That 1971 Supreme Court decision recognized that individuals can sue federal agents personally for constitutional violations, including unreasonable searches. The Supreme Court has sharply limited Bivens claims in recent decades, and lower courts are reluctant to extend the doctrine to new contexts.
For property damage caused during the entry, the Federal Tort Claims Act is a more straightforward path. Under 28 U.S.C. § 1346(b), the government is liable for property damage caused by the negligent or wrongful acts of federal employees acting within the scope of their duties. You have to file an administrative claim within two years of the date you discover the damage. The claim needs a specific dollar amount, receipts, repair estimates, and proof of ownership. Allow up to six months for the agency to respond before you can take the matter to federal court.
Not the Same as a No-Knock Warrant
People often confuse these warrants with no-knock warrants, but they serve completely different purposes. A no-knock warrant lets officers enter without announcing themselves, but you find out immediately because officers are physically present, often executing the warrant with force. The goal is officer safety and preventing evidence destruction in the few seconds between a knock and entry.
A sneak and peek warrant is the opposite in execution. Agents enter quietly, often when nobody is home, conduct their search without disturbing anything, and leave. You may not learn about the search for a month or longer. The goal is preserving the secrecy of an ongoing investigation, not avoiding a confrontation at the door. The knock-and-announce rule the Supreme Court recognized in Wilson v. Arkansas is a Fourth Amendment presumption, and both kinds of warrants are different exceptions to it, each with its own legal standards.