Florida v. Harris

An officer pulled the defendant’s truck over due to an expired license plate. During this encounter, the officer observed that the defendant was “visibly nervous” in that he could not sit still, was shaking and breathing rapidly. He asked the defendant for permission to search the vehicle, which the defendant declined. The officer retrieved his drug-sniffing dog from his patrol vehicle and walked him around the defendant’s truck. The dog alerted to the presence of controlled substances in the truck. The officer, believing he had probable cause, began a mobile conveyance search of the truck, resulting in his discovery of precursor materials for the manufacturing of controlled substances.