Appendix I: Reasonable Belief

AuthorSteve Coughlan/Glen Luther
ProfessionProfessor, Schulich School of Law, Dalhousie University/Associate Professor, College of Law, Saskatchewan
Reasonable Grounds for Arrest Made Out
R. v. Debot, [1989] 2 S.C.R. 1140: The police received conf‌idential infor-
mation from an informant concerning a future dr ug deal. The inform-
ant had previously provided useful information to the police (Cst. G)
and was considered by the police to be reliable. The informant provided
details said to have b een received directly from one of the parties to
the drug transaction indicating date, time, location, type of drug, and
names of the parties to the offence. The police e stablished v isual sur-
veillance of the anticipated site of the drug deal; a vehicle known to the
police was observed a long with persons enter ing/exiting t he premises;
Cst. G, by radio to an off-site off‌icer (Sgt. B), conf‌irmed that the accused
was the registered owner of the vehicle. Sgt. B then instructed other
off‌icers to intercept and search the vehicle. On these facts Cst. B had
reasonable and probable grounds to believe that the accused had drugs
in hi s possession, de spite relia nce on hearsay from other off‌icers. An
off‌icer instructed to carr y out a search by another off‌icer i s entitled to
assume that the off‌icer orderi ng the search has re asonable grounds.
The tip provided by the informant was compelling and detailed: it
went beyond mere rumour; the informant was reliable and not paid nor
facing charges; and the police sur veillance corroborated t he inform a-
tion received.
R. v. Wong, [1990] 3 S.C.R. 36 (obiter conclusion on reasonable grounds
for arrest for unlawf ul gaming): The police entered a recently vacated

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