What is one required action a private person must take after making an arrest?

Taking the person to a magistrate is a necessary step after making a private arrest. This action is crucial because it ensures that the arrested individual is brought before a legal authority who can assess the situation, confirm the legality of the arrest, and determine the next steps in the judicial process. This serves to uphold the legal rights of the arrested person and to comply with due process.

In most jurisdictions, private individuals do not have the authority to detain someone indefinitely. Instead, they must present the arrested individual to a magistrate or other legal entity promptly, where the case can be evaluated and appropriate legal proceedings can commence. This requirement exists to protect the rights of the accused and to maintain the integrity of the legal system.

Other options, like releasing the person immediately, holding them for an arbitrary period, or contacting their family, do not fulfill the legal obligations related to private arrests and fail to ensure that due process is followed. Therefore, taking the person to a magistrate is the correct course of action following a private arrest.