The gang was arrested in Roissy Charles de Gaulle airport last weekend carrying 75,000 ($128,400) and US$16,500 ($25,000) in cash with a thermos full of precious jewellery.
Police believe the valuables were stolen from dozens of victims who were sprayed with scopolamine, a hazardous drug extracted from a South American tree related to deadly nightshade, which temporarily deprives people of free will. In strong doses it is lethal.
The Soviets and the CIA reportedly experimented with it as a truth serum during the Cold War while Joseph Mengele, the Nazi doctor, had it imported from Colombia to use in interrogations. The drug also induces powerful hallucinations.
The arrests came weeks after two Chinese women and a man were held and charged with using a similar drug on victims in central Paris.
According to France Info radio, analysis of powder discovered in a makeshift laboratory in a Paris suburb found it contained scopolamine and atropine, a medication which can also cause hallucinations.
It is thought all those arrested are part of an international Triad-style criminal gang running a multimillion-dollar operation in various countries.
Tales surrounding scopolamine are the stuff of urban legend, with horror stories of how people were raped, forced to empty their bank accounts, and even coerced into giving up an organ.
Unofficial estimates put the number of annual scopolamine incidents in Colombia at 50,000.
Devil's Breath
Clinical name: ScopolamineAlso known as: Hyoscine, burundanga
Grown: Mainly South America
What is it?
A powerful drug extracted from plants belonging to the nightshade family. It is odourless and tasteless
What are its effects?
It is said to turn users into 'zombies' devoid of free will, who then suffer amnesia.
How is it taken?
The drug can be swallowed or inhaled. It can simply be blown in the face of someone on the street; their free will vanishes after exposure
Is it new?
It was reportedly used as a truth serum in the Cold War. It is also said to have been given to the mistresses of dead Colombian leaders before being led to their master's grave and buried alive
Any positives?
It could treat some forms of severe depression.

