The government's warrantless acquisition of Carpenter's cell-site records violated his Fourth Amendment right against unreasonable searches and seizures. This Working Paper represents an attempt to consolidate, rationalize and reform police powers of search and seizure in criminal law.The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated. Fourth Circuit Requests Further Information on Stingray Device to Determine Whether It Violates Fourth Amendment Rights. While there was probable cause for arrest, the Fourth Amendment protects against unreasonable seizures as well as unreasonable searches. The criminal procedure context is different. Fourth Amendment (92). Also reviewed are principles applicable under the Fourth. Amendment to the U.S. Constitution. A warrantless search and seizure of DNA evidence was in violation of the Fourth Amendment.