In a 6-3 decision, the Supreme Court of the United States ruled that the school's search was reasonable and had not violated T.L.O.'s Fourth Amendment rights. The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated.Probable cause is present when the police officer has a reasonable belief in the guilt of the suspect based on the facts and information prior to the arrest. The affidavit must establish probable cause to believe an item related to a criminal investigation will be located in a specific location. The Fourth Amendment requires the government to obtain a warrant based on probable cause to conduct a legal search and seizure. History of Suspicion and Probable Cause, 10 J. CONST. And seizures than the Fourth Amendment. Probable cause is the cornerstone of the search warrant. " This section of the Fourth Amendment was most prominently highlighted in a pair of 20th century Supreme Court decisions.