What is a critical guideline for sources in custody?

The selection of including corroborating evidence in an affidavit is essential because it enhances the credibility of the information provided by sources in custody. When law enforcement presents an affidavit to support obtaining a warrant or justifying a search, it is critical to demonstrate that the information is not merely based on a single source's testimony but is backed by additional evidence. This corroboration serves to confirm the reliability of the source's claims and helps to establish probable cause, which is a necessary standard in many legal proceedings.

Having corroborating evidence strengthens the case, as it shows the judge or magistrate that the information is more than just hearsay and has been validated through additional means. This adherence to a rigorous standard not only upholds the integrity of the judicial process but also protects the rights of individuals involved.

Maintaining confidentiality, releasing a source before providing information, or the source independently providing probable cause, while relevant in different contexts, do not capture the critical nature of corroborating evidence in the legal framework surrounding search and seizure. Thus, the inclusion of corroborating evidence in affidavits is a fundamental guideline for ensuring that sources in custody contribute effectively and legitimately to law enforcement efforts.