1. Each State Party shall adopt such legislative and other measures as may be necessary to establish as criminal offences, when committed intentionally:
(a) Either or both of the following as criminal offences distinct from those involving the attempt or completion of the criminal activity:
(a) Agreeing with one or more other persons to commit a serious crime for a purpose relating directly or indirectly to the obtaining of a financial or other material benefit and, where required by domestic law, involving an act undertaken by one of the participants in furtherance of the agreement or involving an organized criminal group;
(b) Conduct by a person who, with knowledge of either the aim and general criminal activity of an organized criminal group or its intention to commit the crimes in question, takes an active part in:
a. Criminal activities of the organized criminal group;
b. Other activities of the organized criminal group in the knowledge that his or her participation will contribute to the achievement of the above-described criminal aim;
(b) Organizing, directing, aiding, abetting, facilitating or counselling the commission of serious crime involving an organized criminal group.
2. The knowledge, intent, aim, purpose or agreement referred to in paragraph 1 of this article may be inferred from objective factual circumstances.
3. States Parties whose domestic law requires involvement of an organized criminal group for purposes of the offences established in accordance with 8 paragraph 1 (a) (i) of this article shall ensure that their domestic law covers all serious crimes involving organized criminal groups. Such States Parties, as well as States Parties whose domestic law requires an act in furtherance of the agreement for purposes of the offences established in accordance with paragraph 1 (a) (i) of this article, shall so inform the Secretary-General of the United Nations at the time of their signature or of deposit of their instrument of ratification, acceptance or approval of or accession to this Convention.