For police to seize property without a warrant on the basis of reasonable suspicion that an offence has been committed, the suspicion must be a reasonable one - a well-grounded, factually sound suspicion based on specific and articulable facts taken together with rational inferences. It must not be an inchoate, unparticularised suspicion or 'hunch'. The reasonable person must analyze and assess the quality of information critically before entertaining a suspicion, and the suspicion must be based on solid grounds, otherwise it will be flighty or arbitrary. Police must show they believed on reasonable grounds that a warrant would be issued if applied for, and that seeking one would defeat the ends of justice. A mere inability of a person to give a satisfactory answer about the source of goods, without more, is insufficient to constitute reasonable suspicion that an offence has been committed.