She said the ringleaders hired mostly impoverished or indebted Czech nationals as couriers.
Working in pairs, the couriers booked a holiday in Australia, flying via the US or Thailand with four suitcases that were swapped during the stopover.
"The drug was hidden in the luggage in a way that prevented its discovery by X-ray or a sniffer dog," said Kudlackova.
The gang is suspected of having managed to smuggle more than 700 kilogrammes of drugs.
"In Czech Republic alone, sixty people have been charged so far," police said in a statement, also confirming that one ringleader was in custody.
All face between 10-18 years behind bars if found guilty. Australian police have detained four couriers, three of whom have been sentenced to 7-9 years in prison, said Kudlackova.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)