According to Riverside v. McLaughlin, how soon must a person arrested without a warrant be brought before a judicial officer?

Riverside v. McLaughlin established that individuals arrested without a warrant must be brought before a judicial officer without unnecessary delay, and this timeframe has been interpreted generally as within 48 hours of arrest. This ruling is grounded in the Fourth Amendment, which protects against unreasonable seizures and aims to ensure that timely determinations of probable cause are made for the detention of individuals. The court indicated that a delay beyond 48 hours is presumptively unreasonable, barring exceptional circumstances that might justify a longer detention. This decision reinforces the importance of judicial oversight in the pretrial process to protect individual rights and maintain the integrity of the judicial system.