What action must a private investigator take immediately after executing a capias or an arrest warrant in the county of issuance?

When a private investigator executes a capias or an arrest warrant, they must take the individual to the county jail for that county where the warrant was issued. This requirement ensures that the arrested individual is processed according to the jurisdiction's regulations, facilitating appropriate legal proceedings. The county jail is designated for processing and holding individuals arrested under warrants issued within that specific county, thus maintaining order within the law enforcement and judicial system.

The other options, while relevant to the context of handling arrests, do not align with the immediate legal obligation following the execution of a warrant. Taking an individual to a municipal jail is not the next step if the warrant requires them to be held in the county jail. Similarly, releasing someone on bail is not permissible immediately after executing a warrant, as the individual must first be taken into custody and processed appropriately. Notifying the magistrate of the arrest, while important, does not replace the necessity of delivering the arrested individual to the appropriate detention facility first.