In what case did SCOTUS hold that criminal suspects who want to protect their right to remain silent have to speak up and unambiguously invoke it?

Question

Quizplus · Accepted Answer

In Berghuis v. Thompkins, the Supreme Court held that to invoke the right to remain silent, a criminal suspect must do so unambiguously. This means that simply remaining silent is not enough to invoke the right to silence; the suspect must explicitly state their intention to exercise this right.

In What Case Did SCOTUS Hold That Criminal Suspects Who