Subject to the next following subsection, the court by or before which a person is convicted of an offence under this Act may order anything produced to the court, and shown to the satisfaction of the court to relate to the offence, to be forfeited and either destroyed or dealt with in such other manner as the court may order.

The court shall not order anything to be forfeited under this section, where a person claiming to be the owner of or otherwise interested in it applies to be heard by the court, unless an opportunity has been given to him to show cause why the order should not be made.