In criminal investigations, what does 'custodial investigation' entail?

Custodial investigation refers specifically to the process of questioning a suspect after they have been formally arrested and taken into custody. This type of investigation is crucial because it involves gathering information directly from the accused while they are in police custody.

During this phase, law enforcement must adhere to legal protocols, including ensuring that the suspect is aware of their rights, which is often referred to as "Miranda rights" in many jurisdictions. This is essential because any statements made during custodial questioning can significantly impact the legal proceedings that follow.

While preparation of evidence, filing charges, and appearing in court are all critical aspects of the criminal justice process, they do not specifically define what is meant by 'custodial investigation.' The focus here is on the interrogative aspect that follows an arrest, setting it apart from other steps in the criminal procedure.