Probable Cause in Colorado

Police officers in Colorado need probable cause to believe you have engaged in criminal activity before they can make an arrest. The police also have to have probable cause to conduct a warrantless search of your person, vehicle, or property. Searches or arrests without probable cause or a valid warrant may be a violation of your constitutional rights. However, there are many exceptions to the constitutional protections against unreasonable search and seizure.

In this article, our Colorado criminal defense lawyers will address:

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Police officers in Colorado need probable cause to believe you have engaged in criminal activity before they can make an arrest. The police also have to have probable cause to conduct a warrantless search of your person, vehicle, or property.

1. What is a probable cause?

Police officers need to have probable cause to make an arrest, conduct a search of an individual's person or property, or issue a warrant to make an arrest or search. Probable cause requires circumstances, observations, or evidence that gives a prudent person the belief that an individual has committed a crime or evidence of criminal activity will be found.

The U.S. Constitution prohibits unreasonable search and seizure without probable cause.1 Police officers generally need to observe evidence of criminal activity or witness the criminal activity taking place to have probable cause to search or make an arrest.

The other way of making an arrest or conducting a search is through getting a warrant from the court. The judge is supposed to review the evidence and affidavits submitted to determine whether there exists probable cause to issue an arrest warrant or search warrant. The police can then use this warrant to make an arrest or conduct a search.

2. Reasonable Suspicion for traffic stops.

In Colorado, police need to have “reasonable suspicion” to make a traffic stop. This is a lower threshold than probable cause. Reasonable suspicion requires the police officer to have articulable facts that the driver is engaged in some criminal activity.

Even a minor traffic violation is enough for police to justify a traffic stop. If a driver was speeding, rolled through a stop sign, had a broken tail light, or failed to signal a lane change, the police can stop the driver. When communicating with the driver, the officer may then become suspicious of other criminal activity. This includes looking for evidence of drug or alcohol use while operating the vehicle, inconsistent statements, and running their name to see if there are any warrants.

3. Probable cause to search your car.

In most cases, the police need a search warrant to search your vehicle in Colorado. However, there are a number of exceptions that allow the police to search your car without a warrant. This includes:

  • Consent to search
  • Evidence in open view
  • Search incident to a lawful arrest
  • Inventory search after your car is impounded
  • Probable cause to believe there is evidence of a crime

The simplest way for the police to search your car without a warrant is if you consent to a search. Police may imply that you should just consent to a vehicle search to make things easier for you. However, if you consent to a vehicle search, any evidence they find can be used against you. Even if someone else placed something in your car, you may be charged because you were in control of the vehicle.

If the police see drugs, a gun, or other evidence of criminal activity in clear view through your vehicle's windows, they may not need a warrant to search your car.

If the police make a lawful arrest, they may be able to do a warrantless search of your person and the area immediately within your control. If you are a driver, the area within your control may include the area under your seat, in the glove box, ash tray, or side door compartments. However, this generally does not include areas like the truck of the car because it is not within the immediate control of the arrested individual.

If your vehicle is impounded after an arrest or accident, the police may be able to do an inventory search of the vehicle. If the police find evidence of criminal activity during the inventory search, that evidence may be used against you in court. In order for the police to conduct a valid inventory search, the vehicle must be lawfully impounded and the search is conducted under standard inventory policies.

If the police have probable cause to believe there is evidence of criminal activity, they may also be able to search the vehicle under the “vehicle exception.” People are considered to have a lower expectation of privacy for items in their vehicle. The fact that a vehicle can be moved also is used to justify the vehicle exception.

4. Probable cause to search your house.

In most cases, the police need a search warrant to search your house. The police generally need to go to a judge and show probable cause that there is evidence of criminal activity inside your home before they can get a search warrant.

Showing probable cause for a warrant may include providing sworn statements, witness statements, statements from police informants, surveillance evidence, or other relevant information. If the judge finds there is a reasonable basis to believe there is evidence of a crime in your home, the judge may issue the search warrant to allow the police to search your home.

A search warrant generally has to specify the location to be searched and the specific type of evidence police are looking for. Law enforcement searches may be limited to the areas specified in the warrant. Search warrants may also have a limited time frame to be served.

5. When to police need a search warrant?

Searches and seizures inside your home without a warrant are presumptively unreasonable and a possible violation of your constitutional rights.2 However, there are limited exceptions when the police can search your home without a search warrant. These include:

  • Consent to search your home
  • Exigent circumstances in emergency situations
  • Hot Pursuit

If the police ask to come into your home and “look around,” and you say yes, then they may not need a warrant. If you let the police search your house and they find evidence of criminal activity, they may be able to use that evidence against you.

The “hot pursuit” and exigent circumstances exceptions allow for warrantless searches in some emergency situations. If the police are chasing a suspect who they see run into a house, they may be able to enter the property without a warrant. If the police have a reasonable belief that they need to enter a home to prevent physical harm to another person or destruction of evidence, they may also be able to enter without a warrant.

6. Probable cause to make an arrest.

Police need probable cause to make an arrest. This can involve an arrest warrant or a criminal offense committed in the officer's presence. To get an arrest warrant, the police or prosecutor have to show a judge that there is a reasonable belief that the suspect has committed or is going to commit a crime. The police must be able to articulate specific facts to show probable cause and cannot be based on general suspicion.

Many arrests involve criminal activity or suspected criminal activity that is committed in the presence of an officer. If the police officer witnesses activity to believe a person has committed a public offense, misdemeanor, or felony in the officer's presence, they can make an arrest. For example, a police officer is conducting a traffic stop when they smell alcohol on the driver's breath. They may have probable cause to believe the driver is violating Colorado's DUI laws and place the suspect under arrest.

Call us for help...

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If you have been arrested by an officer or searched without probable cause, please contact us at Colorado Legal Defense Group. Our caring Colorado defense attorneys have many years of experience representing clients who are facing criminal charges. We are among the best Colorado criminal defense attorneys to call. Contact us today for a free consultation by phone or in-person or in our Denver law office.


Legal References

  1. The Constitution of the United States, Amendment 4
  2. Payton v. New York, 445 U.S. 573 (1980)

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