The United States Supreme Court held that after a knowing and voluntary waiver of the Miranda rights, officers may continue questioning until the suspect makes an unambiguous request for counsel.
Davis v. United States, 114 S. Ct. 2350 (1994).
John T. Reed,
Constitutional Law - Sixth Amendment - Right to Counsel - Ambiguous Requests,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol33/iss4/15