Because the purpose of the Special Enforcement Branch of Revenue Canada Special Investigations was to cause maximum disruption to criminal operations rather than collecting revenue, a demand made by the Special Investigations Branch pursuant to s. 231.2(1) of the Act had a criminal aspect rather than a purely regulatory or administrative aspect. Accordingly, the accused could not be charged with failure to comply with the demand because it, in turn, was based on information that had been obtained from the RCMP Drug Squad in contravention of the accused's rights under s. 8 of the Charter.