Frazier v. Cupp, 394 U.S. 731 (1969), was a United States Supreme Court case that affirmed the legality of deceptive interrogation tactics by the police.

[1] Acting on a tip, police picked up and interrogated Martin E. Frazier, a 20-year-old U.S. Marine, about his possible involvement in the murder of Russell Anton Marleau.

[1] Frazier denied any involvement in the crime and suggested speaking with an attorney, but police continued to question him.

[2] Frazier appealed his conviction to the United States Supreme Court on three main points.

The Court stated: The fact that the police misrepresented the statements that Rawls had made is, while relevant, insufficient, in our view, to make this otherwise voluntary confession inadmissible.