In criminal prosecutions in Florida, the state has to establish a “chain of custody” for certain kinds of evidence in order for it to be admitted.
Prosecutors have to show that what they are offering into evidence is exactly what they purport it to be. For example, the drugs being shown to the judge and jury are exactly the drugs that were found on the defendant, or the pieces of clothing are the exact garments that were stolen from a given store in a shoplifting case.
In order to prove that those items are one in the same, prosecutors have to show who had possession of those items at all times between the time they were seized by law enforcement until the time of trial. This is the “chain of custody.” It’s the reason why storage of evidence is often critical in criminal cases, particularly when certain exhibits may have been altered or tested. A break in the chain of custody could result in suppression of evidence, which is typically an advantage for the defense.
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