Police in Serbia arrested three people aged 23 to 54 over suspected drug production and sales, while Slovene police arrested three other suspects, aged 34 to 44. The arrests followed a joint operation by the Serbian and Slovene authorities into an organised criminal group allegedly involved in drug smuggling across Croatia, Hungary, Slovakia and Serbia. Investigators allege the group set up companies for international road transport in order to run trucks used for drug smuggling. Trucks were registered to the companies, and separate bunkers were reportedly built inside the cab to hide drugs, while normal cargo was carried in the trailer. Serbian police say that in the second half of 2025, two drivers from Serbia were arrested in France in connection with the same smuggling network, after they allegedly carried drugs by truck from Spain. At the time of the announcement, three suspects had been arrested in Serbia and one Serbian, one Slovene and one Bosnian national had been arrested in Slovenia. Police also said two more people were being sought.