A prosecution is not obliged to call a witness whose evidence goes only to the credit of another Crown witness, and a Jones v Dunkel direction is not required in such circumstances. A registered police informer who is provided with a listening device does not become an agent of the state where the conversations were initiated by the accused and were not elicited or in the nature of interrogation. A trial judge's discretion to refuse to discharge a jury after a break in deliberations due to juror illness will not be disturbed on appeal absent demonstrated miscarriage of justice.
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