Police in Spain have arrested twelve members of a crime ring which smuggled cocaine-infused plastic products from Colombia before extracting the drug at three specialized laboratories.

The gang, led by grandparents and parents of the same family, was capable of producing more than six hundred kilograms of cocaine each month.

The ring shipped in plastic pellets impregnated with cocaine, a method that meant the drug was completely undetectable during standard customs checks.

Police also detained three specialists in extracting the narcotic, who had been flown in from Colombia and worked for ten days straight without leaving the labs.