
In the past, the court has said the "burden rests on the government" to show that a crime suspect has "knowingly and intelligently waived" his rights.
But in a 5-4 decision Tuesday, the court said the suspect had the duty to invoke his rights. If he failed to do so, his later words can be used to convict him, the justices said.
Justice Anthony M. Kennedy wrote that police were "not required to obtain a waiver" of the suspect's "right to remain silent before interrogating him."
In this case, Michigan police had informed the suspect, Van Thompkins, of his rights, including the right to remain silent. Thompkins said he understood, but he did not tell the officer he wanted to stop the questioning or speak to a lawyer.
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