
An arrest is the act of apprehending and taking a person into legal custody, usually because they are suspected of committing a crime. While the specifics of arrest procedures vary across jurisdictions, the Fourth Amendment in the US protects individuals from unreasonable searches and seizures, including seizure of one's person, such as an arrest. This amendment requires that any arrest be based on probable cause, even when a warrant is present. Probable cause is a flexible concept, generally referring to a reasonable basis for believing a crime has been committed or that evidence of a crime is present. An arrest occurs when a suspect is no longer free to leave, which may or may not involve physical restraint.
| Characteristics | Values |
|---|---|
| Person's belief | A person is considered to be under arrest when they reasonably believe that they are not free to leave. |
| Officer's belief | An arrest occurs when an officer believes that there is a reasonable basis for suspecting a crime has been committed. |
| Physical restraint | An arrest does not require the use of physical restraint, such as handcuffs. |
| Miranda Rights | An officer is not legally required to read Miranda Rights at the time of arrest, but they are required before interrogating a suspect. |
| Reason for arrest | An officer must inform the person of the reason for their arrest, but this may depend on the jurisdiction and circumstances. |
| Evidence | An arrest may be made if there is evidence of a crime, such as drug paraphernalia or baggies filled with marijuana. |
| Witness statement | Information from victims or witnesses may be included in an affidavit to support a warrant. |
| Warrants | A judge may issue a search warrant if there is sufficient credible information to establish probable cause. |
| Citizen's arrest | In some places, such as England and Wales, a citizen's arrest is permitted under certain conditions. |
| Absence of formalities | In some countries, like India, no formalities are required during the arrest procedure. |
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What You'll Learn

Probable cause
The determination of probable cause depends on the totality of the circumstances, including all the information known to the arresting officers at the time of the arrest. This includes information obtained through their experience and training, as well as information from victims or witnesses. Probable cause can also be established by in-court testimony after a warrantless search.
In some cases, probable cause can be established by a K-9 unit smelling for drugs or other contraband. If a drug dog alerts its officer during a traffic stop, this can be considered probable cause to conduct a search of the vehicle, as long as one of the exceptions to a warrant is present, such as incident to arrest, automobile, exigency, or stop and frisk.
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Miranda Rights
In the United States, the Miranda warning, or Miranda rights, is a type of notification customarily given by police to criminal suspects in custody or during a custodial interrogation. These rights are derived from the 1966 U.S. Supreme Court decision in Miranda v. Arizona, which found that the Fifth and Sixth Amendment rights of Ernesto Arturo Miranda had been violated during his arrest and trial for armed robbery, kidnapping, and rape.
The Miranda rights are as follows:
- You have the right to remain silent.
- Anything you say can and will be used against you in a court of law.
- You have the right to talk to a lawyer for advice before any questioning.
- You have the right to have a lawyer with you during questioning.
- If you cannot afford a lawyer, one will be appointed for you before any questioning, if you wish.
- If you decide to answer questions now without a lawyer present, you have the right to stop answering at any time.
It is important to note that Miranda rights do not have to be read in any particular order and the specific language used can vary between jurisdictions. However, these rights must be adequately and fully conveyed to the suspect. The purpose of the Miranda warning is to advise suspects of their right to silence and protection from self-incrimination, ensuring that any statements made during interrogation can be used in later criminal proceedings.
While an officer is not legally required to read Miranda rights at the time of arrest, they are necessary before interrogating a suspect. Therefore, many officers will read the rights immediately after an arrest to be thorough.
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Warrants
An arrest warrant is a court order issued by a judge or magistrate that authorises law enforcement officers to arrest and detain a specific individual. Warrants are typically issued when there is probable cause to believe that the individual has committed a crime or is otherwise involved in criminal activity.
In the United States, the Fourth Amendment requires that arrests be based on probable cause, even when a warrant has been issued. Probable cause is a flexible concept, depending on the totality of the circumstances and how the court interprets the reasonableness standard. For example, in the case of Carpenter v. United States, the Supreme Court found that "specific and articulable facts" relevant to a criminal investigation can constitute probable cause.
To obtain a warrant, law enforcement officers must present credible information to establish probable cause. This can include observations made by officers, information from victims or witnesses, and the officers' experience and training. Once a warrant has been issued, officers have the legal authority to apprehend the individual named in the warrant.
In some jurisdictions, citizens' arrests are permitted, where any person can arrest someone if they have reasonable grounds to suspect that they have committed an indictable offence. However, certain conditions must be met, and citizens should be aware of the legal requirements and ramifications of making a citizen's arrest.
It is important to note that the absence of a warrant does not necessarily invalidate an arrest. Under exigent circumstances, officers can conduct a warrantless arrest, search, or seizure if they have probable cause to believe that a crime has been committed or that evidence of a crime is present.
Additionally, individuals arrested without a warrant must be brought before a competent authority shortly after the arrest for a prompt judicial determination of probable cause. This ensures that the rights of the accused are protected and that any evidence obtained during a warrantless arrest is admissible in court.
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Custody
The concept of custody in an arrest is crucial as it signifies the point at which certain procedural requirements are triggered. These procedures may vary depending on the jurisdiction, and it is important to note that some states and cities have unique arrest procedures and regulations. For instance, in North Carolina, an officer is required to inform the arrested person of the cause of the arrest as promptly as is reasonable under the circumstances.
The Fourth Amendment of the U.S. Constitution plays a significant role in defining the requirements for a legal arrest. It protects individuals from "unreasonable searches and seizures," including the seizure of one's person during an arrest. According to the Fourth Amendment, an arrest must be based on probable cause, even when an arrest warrant is involved. Probable cause is a flexible concept, depending on the totality of the circumstances and how the court interprets the reasonableness standard. It generally refers to a reasonable basis for believing that a crime may have been committed or when evidence of a crime is present.
In determining whether an individual is in custody and under arrest, courts apply the reasonable man" standard. This involves assessing whether a reasonable person in the suspect's position would have believed they were not free to leave. For example, during a routine traffic stop, a driver is technically under arrest as they are not free to leave until the officer has issued a ticket or a warning. However, this type of arrest is temporary and typically does not become part of an individual's arrest record.
It is important to note that the absence of physical restraint does not necessarily indicate the absence of an arrest. For instance, in the United Kingdom, a person must be told they are under arrest in simple, non-technical language, and they are not required to be physically restrained with handcuffs. Similarly, in India, no specific formality is required during an arrest, and it can be conducted by a citizen, a police officer, or a magistrate.
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Criminal suspicion
Probable cause is the legal standard that law enforcement must meet to make an arrest, conduct a search, or obtain a warrant. It exists when there is a reasonable basis for believing that a crime has been or will be committed, and that the suspect is involved. The determination of probable cause depends on the totality of the circumstances, including the information available to the arresting officers at the time.
When assessing criminal suspicion, law enforcement officers may consider various factors, including witness statements, physical evidence, and the suspect's behaviour. In some cases, officers may rely on their training and experience to identify suspicious behaviour or circumstances that suggest criminal activity. For example, an officer may suspect drug possession if they observe drug paraphernalia during a traffic stop.
It's important to note that criminal suspicion alone may not always be sufficient for an arrest. Other factors, such as the presence of a warrant or the specific laws and procedures of the jurisdiction, also play a role. Additionally, the concept of "reasonable suspicion," which is a lower standard than probable cause, may be relevant in certain situations, such as investigatory stops or detentions.
The interpretation of criminal suspicion and probable cause can be complex and context-dependent. Courts apply the reasonable man" standard to determine whether an individual is under arrest, considering whether a reasonable person in the suspect's position would believe they were free to leave. This standard helps distinguish between situations where a person is simply being questioned by police and those where they are formally under arrest.
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Frequently asked questions
An arrest is the act of apprehending and taking a person into custody, usually because the person has been suspected of or observed committing a crime.
A legal arrest requires probable cause, meaning there is a reasonable basis for believing that a crime may have been committed. A legal arrest can also occur if there is an arrest warrant, which a judge will issue if there is sufficient credible information to establish probable cause.
Legal custody refers to when a person is taken into custody by a police officer or a court of law. Physical custody refers to the act of restraining a person through the use of handcuffs or physical force.
In the United States, you have the right to remain silent, and anything you say can be used as evidence. You also have the right to know why you are being arrested and to be brought before a competent authority shortly after your arrest.
While an arrest does not always lead to a criminal conviction, it can have serious ramifications such as absence from work and social stigma. In some jurisdictions, a person may also have the legal obligation to disclose an arrest when applying for a job, loan, or professional license.
















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