R v Dene, 2010 ONCA 796 (Per Curiam – OCA):

[4] Assuming, without deciding, that the police did not have reasonable and probable grounds to arrest the appellants, there was still ample evidence to support a valid investigative detention of both appellants. Their behaviour in the taxi was suspicious and evasive. Their posture and body movements indicated that they could be carrying concealed weapons or drugs. Finally, and most significantly, their flight from the police when the taxi stopped, combined with their earlier behaviour, provided the police with grounds for an investigative detention.