A joint Czech-Polish investigation team was formed while tracing drug and anabolic-steroid sales between groups operating in the two countries.[1] Two men built the organised group after finding marijuana buyers in Poland.[1] Five other accused people in Czechia grew the cannabis the gang bought.[1] Police caught 24 people in Czechia and Poland in the Operation Kardio roundup.[2] The Brno prosecutor indicted 13 people in Czechia for drug crime and anabolics dealing.[1] Eleven other people were charged in Poland.[1] Three accused people were in custody at the time of the announcement.[1] Eight defendants in Czechia face up to 18 years in prison, while five marijuana growers face up to five years.[2]

Detectives blame the group for exporting and selling 35 kg of marijuana.[2] Officers seized 20 kg of marijuana, 130 cannabis plants and growing equipment, along with 110 g of cocaine, 165 g of pervitin, 27 g of mefedron, additional anabolics and an artillery-shell fuse.[1] Officers also seized a flat worth almost three million korunas, investment gold worth about one million, half a million in cash, luxury watches and three cars.[2] Polish police seized 167 kg of klefedron, almost one kilogram of MDMA, a similar amount of cocaine, 230 g of alpha-PVP and funds worth almost half a million korunas.[1] Polish investigators blame the group for importing 120 kg of marijuana, 20 kg of amphetamine, 50 kg of metamfetamin and 5 kg of alpha-PVP.[1]

The gang bought marijuana for 30,000 to 40,000 korunas per kilogram and sold it in Poland and Hungary for roughly double.[2] In Poland the gang with two other men arranged pervitin, mefedron and anabolic and hormonal substances that it imported and distributed in the Central Bohemian, Olomouc and South Moravian regions.[1] The group later expanded its portfolio to include cocaine sales.[2]