The Croatian Ivo Rojnica, supposedly responsible for the largest "cave" of buying and selling dollars in Buenos Aires, refused this Thursday to testify, as did another financier and a businessman, in the case in which they are accused of integrating companies dedicated to money laundering. assets from international drug trafficking, so they will continue to be detained, judicial and police sources reported. The three defendants were investigated this afternoon by federal judge 1 of Lomas de Zamora, Federico Villena, before whom the defenders requested the house arrest of all of them. According to sources, the accused were investigated for the crime of "aggravated money laundering", although the cover is provisional since the investigation continues and the main hypothesis suggests that there are more people involved. For this reason, Judge Villena decreed the secrecy of the file, while awaiting the results of a series of expert reports, the spokespersons added. The cause For five years, the magistrate has been investigating a series of money laundering maneuvers deployed in the country by the Mexican Sinaloa cartel, among other organizations. One of those, which the detainees are accused of, is laundering the money that was brought into the country to finance the drug trafficking operation known as "Bobinas Blancas", discovered in June 2017 in the Buenos Aires city of Bahía Blanca, following of which almost two tons of cocaine were seized that the Mexican cartel planned to send to Europe inside steel coils.