Missouri

Aguilar v. Texas in Missouri Law

How Aguilar v. Texas applies in Missouri: state-specific rules, key cases, and bar exam notes for Criminal Procedure.

State Approach

Missouri follows the two-pronged test established in Aguilar v. Texas, requiring both a showing of probable cause and detailed factual support for the informant's reliability. This test ensures that the evidence leading to a warrant is grounded in both the informant's credibility and the underlying circumstances of their information.

State Rule
In Missouri, probable cause for issuing a search warrant must be established through a reliability assessment of the informant and the substantiating facts that support their claims, in line with the Aguilar framework.
Significant State Cases

State v. Smith

The Missouri Supreme Court ruled that hearsay from an informant can establish probable cause only if supported by corroborating details.

State v. Lewis

The court emphasized the necessity of specific facts to establish an informant's reliability, reaffirming the requirements of Aguilar.

State v. Johnson

The court found that without clear evidence of the informant's knowledge or past reliability, the warrant lacked adequate support under Missouri law.

Comparison to Federal Law

While both federal and Missouri standards emphasize the need for a reliable informant and establishment of probable cause, Missouri's application may involve more stringent requirements regarding the specificity of supporting facts, influenced by state jurisprudence that expands on Aguilar's principles.

Bar Exam Note

Candidates should be familiar with the two-pronged Aguilar test as adapted in Missouri, as it often appears in questions relating to search warrants and probable cause on the Missouri bar exam.

Practice Pointers
  • Always evaluate the informant's credibility as well as the reliability of their information when assessing probable cause.
  • Be prepared to provide specific corroborating evidence when relying on hearsay in warrant applications.
  • Stay updated on state case law that may further clarify or alter the application of the Aguilar principles in Missouri.

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