Which circumstance allows for the immediate execution of an arrest warrant?

The immediate execution of an arrest warrant is justified when there is proper authority from a judge. An arrest warrant is a legal document issued by a judge or magistrate that grants law enforcement the authority to take a specific individual into custody based on probable cause that this individual has committed a crime. This judicial oversight is essential to ensure that the rights of the accused are protected and that there is a legitimate basis for the arrest.

In contrast, options that rely on consent, awareness of the warrant, or the belief that a crime is ongoing do not inherently provide the same level of judicial authority necessary for executing an arrest warrant. Consent may allow for certain searches or actions, but it does not replace the necessity of having a warrant based on judicial review. Simply being aware of a warrant or the belief that a crime is occurring does not provide the formal legal grounds required for arrest; the warrant itself, issued by a judge, is the key component that legitimizes immediate execution.