In police talk, BOLO means “Be On the Look Out.” It’s a directive issued by a law enforcement agency telling every officer in range to watch for a specific person, vehicle, or object tied to an active case. A patrol unit hearing a BOLO over the radio or seeing one pop up on a mobile data terminal knows to start scanning for whatever the alert describes, and to stop and question anyone or anything matching it.
BOLOs are built for speed. A suspect flees a robbery, a child disappears from a playground, a car involved in a hit-and-run vanishes into traffic, and within minutes officers across the area have a working description. The alert itself is an instruction to the field, not a press release, and the legal rules around it shape both how officers act and what rights you have if your name or vehicle ends up on one.
What a BOLO Contains and Why It Goes Out
A useful BOLO is specific. Vague descriptions waste officers’ time and raise the risk of the wrong person being stopped. For individuals, that means physical details: height, weight, build, hair color, clothing at the time of the incident, and distinguishing marks like tattoos or scars. Photographs are attached when available and make a real difference in identification accuracy.
For vehicles, the essentials are make, model, year, color, and license plate number. Damage, aftermarket modifications, bumper stickers, or anything else that makes the car stand out gets included. The more granular the description, the less likely an officer pulls over the wrong silver sedan.
Beyond the physical details, a BOLO carries context: why the person or vehicle is wanted, what crime is involved, whether the subject is considered armed or dangerous, known associates, likely direction of travel, and any special instructions. An officer responding to a BOLO for a missing elderly person with Alzheimer’s handles the encounter very differently than one looking for an armed robbery suspect.
BOLOs go out when time matters. The common triggers are:
- Active criminal investigations with a suspect still at large, especially for serious offenses like armed robbery, assault, and homicide.
- Missing persons cases where circumstances suggest danger, including children, elderly people with dementia, and adults whose disappearance involves suspected foul play.
- Vehicle-related incidents such as carjackings, hit-and-runs, and cars spotted leaving a crime scene.
BOLO and APB Mean Roughly the Same Thing
You’ll sometimes hear the older term APB, short for “All Points Bulletin.” APB dates back to an era when dispatchers broadcast alerts to all points on a radio network. BOLO gradually replaced it in most departments because it describes what officers are supposed to do: actively watch for something specific. Some agencies still use APB in conversation, and the two are functionally interchangeable, but BOLO is the standard in modern police documentation and dispatch systems.
How Long a BOLO Stays Active
BOLOs don’t run forever. Most departments set automatic expiration periods, commonly around 14 days, after which the alert goes inactive unless someone renews it. Serious violent crimes are the exception: homicide BOLOs typically stay active until the investigating officer manually deactivates them.
A BOLO also gets canceled when its purpose is fulfilled, meaning the suspect is arrested, the missing person is found, or the vehicle is recovered. Stale BOLOs cause real problems, from wasted officer time to wrongful stops of people who are no longer wanted. Agencies using automated license plate reader systems are generally required to refresh their watch lists frequently, often within every 24 hours, for exactly this reason.
Your Rights if You’re Named in a BOLO
Being named in a BOLO doesn’t strip you of your constitutional rights. It does change what officers are legally authorized to do when they encounter you.
A BOLO generally gives officers grounds to approach, question, and briefly detain you in what’s known as a Terry stop. In Terry v. Ohio, the Supreme Court held that an officer may briefly stop and detain a person without a full arrest warrant when the officer has reasonable suspicion, grounded in specific and articulable facts, that the person is involved in criminal activity.1Justia U.S. Supreme Court Center. Terry v Ohio, 392 US 1 (1968) A credible BOLO typically satisfies that reasonable suspicion threshold, but the stop has to stay limited in scope and duration to what’s necessary to confirm or dispel the suspicion.
If the encounter escalates to a search or arrest, officers need more than the BOLO alone. The Fourth Amendment protects against unreasonable searches and seizures, so any search of your person, vehicle, or belongings generally requires probable cause, a warrant, or your consent.2United States Courts. What Does the Fourth Amendment Mean An officer who spots you matching a BOLO description can stop you and ask questions. Searching your trunk requires a stronger legal basis than the alert alone.
One technology-specific wrinkle worth knowing: in many jurisdictions, a hit from an automated license plate reader by itself doesn’t automatically give an officer legal justification to stop you. Policies in several departments require the officer to visually confirm the plate number, verify the alert is still active, and independently develop reasonable suspicion. The rules vary, and some federal courts have found that a credible BOLO hit from a plate reader can supply reasonable suspicion on its own.3United States Court of Appeals for the Fifth Circuit. United States of America v Elijah Porter
People wrongfully named in a BOLO sometimes face real consequences: missed work, public embarrassment, even physical confrontations during stops. If you’ve been wrongfully targeted, you may have grounds for a formal complaint to the issuing agency or, in more serious cases, a civil lawsuit. The strength of any claim depends heavily on whether the agency followed its own protocols and whether the underlying information was credible when the BOLO went out.
If Evidence Comes From a Flawed BOLO
When a BOLO leads to an arrest, a search, or the seizure of evidence, courts evaluate whether the alert met the necessary legal standards. If it didn’t, the exclusionary rule can keep that evidence out of trial. An officer who stopped you based on a BOLO lacking reasonable suspicion, or who searched your car without probable cause after matching you to an alert, may see any resulting evidence thrown out.
The rule extends to what courts call “fruit of the poisonous tree”: evidence discovered only because of an initial unlawful action gets excluded too, even if the later discovery would otherwise have been lawful. The threat of civil liability also pressures agencies to verify information before broadcasting it, since departments that issue sloppy or unfounded alerts risk paying monetary damages to the people harmed.
Public-Facing Alerts You May See
Many BOLOs stay within law enforcement channels, but several programs formalize the concept for specific populations and push the alert out to the public.
AMBER Alerts
AMBER Alerts are the most widely recognized public program, focused on child abductions. The PROTECT Act of 2003 codified the system at the federal level and created the AMBER Alert Coordinator within the Department of Justice to eliminate gaps in the network and coordinate regional alerts.4Office of the Law Revision Counsel. 34 USC 20501 – National Coordination of AMBER Alert Communications Network The Coordinator also consults with the FBI on each child abduction for which an alert is issued.5U.S. Department of Justice, Office of Justice Programs. Legislation – AMBER Alert Alerts reach the public through highway signs, television and radio broadcasts, and phone notifications.
Silver Alerts
Silver Alerts serve a similar function for missing older adults, particularly those living with Alzheimer’s disease, dementia, or other cognitive impairments. There is no national Silver Alert program; the systems operate on a state-by-state basis, and roughly half the states have formal programs. Most require the missing person to be over 60 or to have a diagnosed condition affecting cognitive or physical function.
Ashanti Alerts
The Ashanti Alert Act of 2018 filled a gap between the AMBER and Silver programs by creating a voluntary nationwide notification network for missing adults over 17 who don’t qualify for either. The system targets situations involving suspected abduction or danger to the missing person, and states, territories, and tribes operate it independently with their own activation criteria. Reporting a missing adult always requires law enforcement involvement and an active investigation.6Bureau of Justice Assistance. Ashanti Alert Act National Notification System Overview
Wireless Emergency Alerts
Law enforcement can push notifications straight to your phone through the Wireless Emergency Alerts system. WEAs are short messages, up to 360 characters, broadcast from cell towers to every WEA-enabled device in a targeted area. The system supports AMBER Alerts for child abductions, imminent threat alerts for active dangers like shooters, and public safety alerts for threats that may not be immediate.7FEMA. Wireless Emergency Alerts If your phone has ever blared an alert about a missing child with a vehicle description, that was the WEA system extending a BOLO’s reach far beyond police channels.
If You Spot Someone Matching an Alert
If you see a person or vehicle matching a public alert like an AMBER or Silver Alert, call 911 immediately. Do not approach the person or attempt to follow the vehicle yourself. Give the dispatcher your location, the direction of travel if you’re watching a car, and as many details as you can see: plate number, vehicle color, number of occupants. Let officers handle the contact. Civilians who try to intervene directly can spook a suspect into fleeing, endanger themselves, or create confusion that slows the actual response.
Penalties for False Reports That Trigger a BOLO
Knowingly feeding false information to police can trigger a BOLO against someone who has done nothing wrong. Every state criminalizes filing a false police report, and penalties escalate sharply when the false report causes real harm. Charges typically range from a misdemeanor for the initial false statement to felony offenses if the resulting law enforcement response leads to serious injury or death.
At the federal level, making a materially false statement to a law enforcement agency within federal jurisdiction can result in up to five years in prison under 18 U.S.C. § 1001, with higher penalties if the statement involves terrorism or certain crimes against children.8Office of the Law Revision Counsel. 18 US Code 1001 – Statements or Entries Generally Courts may also order restitution covering the full cost of the response the false report triggered. “Swatting,” where someone fabricates an emergency to provoke an armed police response at a victim’s address, is the most extreme version of this abuse and has led to both state and federal prosecutions.