In January 2010, Europol and the EMCDDA examined the available information on a new psychoactive substance, mephedrone, through a joint assessment based upon the following criteria:
1. the amount of the material seized;
2. evidence of organised crime involvement;
3. evidence of international trafficking;
4. analogy with better-studied compounds;
5. evidence of the potential for further (rapid) spread; and
6. evidence of cases of serious intoxication or fatalities.
The EMCDDA and Europol agreed that the information collected on mephedrone
satisfied all criteria (1 to 6). The two organisations therefore concluded that sufficient
information had been accumulated to merit the production of a Joint Report on
mephedrone as stipulated by Article 5.1 of the Decision.