In common law legal systems, a motion to suppress is a formal, written request to a judge for an order that certain evidence be excluded from consideration by the judge or jury at trial. In the United States, the term "motion to suppress '' typically encompasses motions in criminal cases where the proposed basis for exclusion arises from the United States Constitution, a state constitution, or a specific statute permitting the exclusion of certain types of evidence (for instance, a complaint that police procedures in a given case violated the defendant 's Fourth Amendment right to be free from unreasonable searches and seizures).
what is the purpose of a motion to suppress
certain evidence be excluded from consideration by the judge or jury at trial