The accused was arrested for a sexual assault and advised of his right to counsel.
While detained, the police requested a blood sample, ostensibly for the investigation of the assault for which he was arrested, but primarily to compare against DNA evidence from an earlier, unrelated sexual assault.
The accused consented to the blood sample without being informed of the police's dual investigative purpose or being re-advised of his right to counsel regarding the earlier assault.
The Supreme Court of Canada held that the accused's rights under sections 8, 10(a), and 10(b) of the Charter were violated because his consent was not fully informed.
The Court upheld the exclusion of the DNA evidence under section 24(2) of the Charter, concluding its admission would render the trial unfair.