Exclusionary Requirements In Criminal Investigation

The Fourth Amendment of the Constitution provides “protection against unreasonable searches or seizure by government agents and law enforcement officers who then attempt to use that evidence in a criminal prosecution”(Buckles, 2006, p. 132), therefore law enforcement and investigators must meet certain requirements in order to avoid that the evidence would fall under the exclusionary rule. There are two Four Amendment Search Warrant Requirements they are probable cause and a sworn affidavit specifying the place that needs to be searched, what items or evidence would most likely be seized, and how would this search support the probable cause (Buckles, 2006, p. 132). The probable cause requirement means that the evidence that can be found at the scene can be more probable that …show more content…
163). Crime labs can provide personnel to assist investigators during the processing of the crime scene to recognize, identify, collect, and preserve physical evidence by using sophisticated forensic equipment, crime lab personnel can also assist with sketching, documentation, and photography of the crime scene (Buckles, 2006, p. 164). During the analysis of evidence crime labs provide different kinds of analysis services such as latent fingerprint and impressions analysis, physical sciences and trace evidence analysis, biological and serology analysis, toxicology analysis, ballistics analysis and toolmark identification, and questioned document analysis (Buckles, 2006, p. 166). In the court, lab personnel or criminalists can provide professional testimony of the evidence and explain the procedures that were taken with the evidence at the lab during the analysis and tests (Buckles, 2006, p.