Bangladesh, April 2 -- United States federal prosecutors have indicated that additional and potentially more serious charges may be filed against alleged South American drug trafficker Sebastián Marset, a development that could significantly expand the scope of an already high-profile international criminal case. The announcement came during a recent arraignment hearing in a federal court in Virginia, where Marset formally faced initial charges related to money laundering tied to illicit narcotics proceeds.

Marset, a 34-year-old Uruguayan national, is widely accused by authorities of orchestrating a vast transnational drug trafficking network that transported massive quantities of cocaine from South America to Europe. While the curr...