“Fruit of the poisonous tree” is a legal doctrine that prohibits the use of evidence obtained through unlawful or unconstitutional means in a criminal proceeding. The term originates from the idea that evidence tainted by an initial illegality, or “poisonous tree,” is considered inadmissible in court, along with any subsequent evidence derived from it, known as the “fruit.” This doctrine serves to deter law enforcement officials from engaging in unconstitutional conduct, such as illegal searches or coercive interrogations, by excluding any evidence obtained as a result.
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This glossary post was last updated: 29th March, 2024.
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