Fourth Amendment-"Mere Evidence Rule"-The distinction between instrumentalities, contraband, fruits of the crime and evidentiary objects has been abolished and evidentiary objects may now be searched for and seized if the search is reasonable and if the officers have probable cause to believe that such seizure will lead to apprehension or conviction.
Warden, Maryland Penitentiary v. Hayden, 87 S. Ct. 1642 (1967).
Robert A. Kelly,
Constitutional Law - Criminal Law - Fourth Amendment - "Mere Evidence Rule",
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol6/iss1/5