A major operation organized by the Australian police in the state of Queensland over 12 months has concluded with the arrest of 22 suspects and the confiscation of a considerable quantity of cocaine.

The inquiry revealed that the drugs were most probably imported by Romanian traffickers, according to Australian newspaper The Courier Mail.

Police raids led to the identification of a sophisticated network of criminals spanning from Romania to the states of Western Australia, Victoria and Queensland.

The commander of an Australian anti-organized crime brigade told the media that it was difficult for policemen to infiltrate the traffickers’ ring because the business was mostly run within the Romanian community in the country.