Appendix I: Reasonable Belief

AuthorSteve Coughlan; Glen Luther
Reasonable Grounds for Arrest Made Out
R v Debot, [1989] 2 SCR 1140: The police received conf‌idential informa-
tion from an informant concerni ng a future drug deal. The inform ant
had previously provided useful in formation to the police (Cst G) and
was considered by the police to be reliable. The informant provided
details said to have been received directly from one of the parties to
the drug tran saction indicating date, time, location, type of drug, and
names of the part ies to the offence. The police established visu al sur-
veillance of the anticipated site of the dr ug deal; a vehicle known to the
police was observed along with persons entering /exiting the premises;
Cst G, by radio to an off-site off‌icer (Sgt B), conf‌irmed that the accused
was the registered ow ner of the vehicle. Sgt B then instructed ot her
off‌icers to intercept and search the vehicle. On these facts Cst B had
reasonable and probable grounds to believe that t he accused had drugs
in his posse ssion, despite reliance on hearsay from other off‌icers. An
off‌icer instructed to carry out a search by another off‌icer is entitled to
assume that the off‌icer ordering the search has re asonable grounds.
The tip provided by the informant was compel ling and detailed: it
went beyond mere rumour; the informant was rel iable and not paid nor
facing charges; and the police sur veillance corroborated the in forma-
tion received.
R v Wong, [1990] 3 SCR 36 (obiter conclusion on re asonable ground s for
arrest for unlawf ul gaming): The police entered a recently vacated room

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