Mont. Code Ann. § 44-12-104

Controlled substances that are possessed, transferred, offered for transfer, manufactured, prepared, cultivated, compounded, or processed in violation of Title 45, chapter 9, and that are seized under the provisions of this chapter are contraband and shall be summarily forfeited to the state. Controlled substances which are seized or come into the possession of the state and the owners of which are unknown are contraband and shall be summarily forfeited to the state.