Gianina García Troche is a Uruguayan national whose name became internationally known through the Paraguayan investigation known as A Ultranza Py, one of the country's largest cases targeting alleged organized crime and illicit financial networks. She is the former partner of Sebastián Marset, a Uruguayan organized-crime figure investigated in Paraguay and other countries.
García Troche was arrested in Madrid, Spain, on July 17, 2024, after Paraguay requested her detention for extradition. Paraguay's judicial authorities were seeking her in connection with the A Ultranza case.
Extradition to Paraguay
Spanish authorities subsequently approved her extradition. In April 2025, Spain's National Court ordered that she be transferred to Paraguay after the extradition process was approved through the relevant judicial and governmental procedures.
She arrived in Paraguay on May 21, 2025. Paraguay's Public Prosecutor's Office stated that she had been formally investigated for alleged money laundering involving proceeds allegedly derived from international drug trafficking. These accusations form part of an ongoing criminal case and should not be treated as a final conviction.
Allegations in A Ultranza Py
According to the Paraguayan prosecution, García Troche allegedly participated in financial operations designed to conceal the origin of money that prosecutors associate with the criminal network investigated in A Ultranza Py.
The 2026 prosecution alleges that she established Grupo San Jorge S.A., which operated commercially under the name Total Cars, and that the company was allegedly used to introduce funds of illicit origin into Paraguay's financial system. Prosecutors further allege that she held a majority shareholding in the company.
The prosecution also alleges that García Troche used bank accounts and commercial documentation to justify financial transactions. These are allegations presented by prosecutors, and her defense has challenged aspects of the evidence and the prosecution's interpretation of the financial records.
Preventive detention
In May 2026, Paraguay's Public Prosecutor's Office formally accused García Troche of money laundering allegedly involving proceeds from drug trafficking. The case was assigned to Judge Rosarito Montanía, who must determine whether the prosecution has sufficient grounds for the case to proceed to a full trial.
In June 2026, the judge maintained her preventive detention at the women's maximum-security facility in Emboscada. Her defense had requested a review of the detention and proposed house arrest, but the court rejected the request. A preliminary hearing was subsequently postponed to August 10, 2026.
As of October 2026, Paraguayan reporting continued to indicate that García Troche remained in preventive detention while the judicial proceedings continued.
Legal status
Gianina García Troche should therefore be described as an accused defendant under judicial proceedings, not as a convicted money launderer. The Paraguayan prosecution alleges that she participated in laundering funds connected to an organized-crime network, while the courts have yet to issue a final judgment establishing her guilt.
Her case has attracted international attention because of her relationship with Sebastián Marset, her extradition from Spain and her role in one of Paraguay's most significant organized-crime investigations. The judicial proceedings remain important to determining what, if any, criminal responsibility can ultimately be attributed to her.
SOURCES:
Paraguay Public Prosecutor's Office — García Troche extradited from Spain
Paraguay Public Prosecutor's Office — Spain approves extradition
Paraguay Public Prosecutor's Office — Immediate extradition ordered
La Nación Paraguay — Preventive detention maintained in June 2026
Última Hora — García Troche case updates through October 2026
