A LARGE drug laboratory was uncovered at a Hallam property on 13 March.
Casey Crime Investigation Unit detectives descended on the factory in Colorado Court about 9pm as they searched for a man who failed to appear in court that week.
A 40-year-old male was arrested at the scene after a stolen car, believed to be used in an armed robbery at Beaconsfield, was found.
The Police Canine Unit was later called after a person was seen fleeing into the factory when police arrived.
A police search discovered a 22-year-old Hallam woman and 42-year-old Kooweerup man, as well as the clandestine laboratory.
Three people were arrested at the scene and are assisting police with their inquiries.