"No-knock warrant" means a lawful search warrant that authorizes entry onto a premises without notice to any occupant on the premises at the time of service. The officers will obtain the search warrant after completing an application and affidavit supporting the warrant request.If you're not finding the forms you need, contact us at (801) 238-7990 or Click here to contact the web navigator. The Fourth Amendment sets out the right to be free from "unreasonable searches and seizures" and establishes conditions under which search warrants may be used. An improper search in Utah is an illegal search that violates an individual's constitutional right to privacy. Under the Fourth Amendment of the United States Constitution, law enforcement officers must obtain a warrant before conducting a search. The court did so in two steps. That applies everywhere in the US. Under its provisions, warrants are issued only upon probable cause (reasonable grounds for suspecting someone is involved in a crime). ¶11 Under the Fourth Amendment, defendants enjoy the rebuttable presumption that a search or seizure is unreasonable if effected without a warrant.