The Crown brought an application to qualify Detective Constable Charlie Rau as an expert witness on possession for the purpose of trafficking in cannabis marihuana, including production, valuation, and trafficking.
The defendant opposed, challenging the officer's methodology and expertise.
The court applied the two-step Mohan test, focusing on reliability and proper qualification.
It found the officer qualified based on extensive experience and training, rejecting the strict application of Daubert factors for non-scientific expert evidence.
The court admitted the expert evidence but imposed specific limitations on its scope, particularly regarding medical users, edibles, and extracts.
