Out of more than 170 people tested for alcohol and drugs, nine provided a positive result for drugs in their system.
The samples were sent off for formal analysis and eight have since been confirmed as having
the presence of illicit drugs.
All eight people have been charged with driving with a prescribed illicit drug in oral fluid or blood following the police operation on December 5 near the gang’s Bayswater clubhouse.
Officers from the Gang Crime Squad, Breath and Drug Bus Operations and other specialist
units carried out the operation to target members and associates attending a planned function at the clubhouse.
They are due to appear in the Perth Magistrates Court in February.
Police say seven of the accused are “known bikie members or associates”.
Seven are alleged to have provided samples that tested positive for methamphetamine.
The eighth person is alleged to have provided a positive reading for cannabis.
A 55-year-old man from Beaconsfield, a 49-year-old woman from Lockridge, a 20-year-old man from Belmont, a 49-year old Bibra Lake man, a 30-year-old man from Boulder, a 27-year-old Boulder man, a 43-year old South Lake man and a 52-year-old man from Furnissdale have been charged.