Operaciju "Salonica" predvodila je španska civilna garda, a Europol je odigrao koordinacijsku ulogu s policijom u sedam zemalja, među kojima su Albanija, Austrija, Belgija, Njemačka, Italija, Makedonija i Srbija.
Operation Salonica was led by the Spanish Civil Guard, while Europol played a co-ordinating role as it worked with police in seven countries, including Albania, Austria, Belgium, Germany, Italy, Macedonia and Serbia.