The Argentine government filed a complaint in the International Criminal Court (ICC) against Venezuela over the arrest of military policeman Nahuel Gallo. The foreign ministry released a communiqué on Thursday calling Gallo’s arrest, whose location remains unknown since December 8, an “arbitrary detention and forced disappearance.”

The statement added that Gallo’s arrest “constitutes a grave and flagrant violation of human rights, evidencing a systematic pattern of crimes against humanity” committed in Venezuela.

The news, however, caused concern in the gendarme’s family. His partner, María Alexandra Gómez, said the meeting could complicate her husband’s situation.

“It scares the hell out of me because obviously Nahuel’s situation from the very first moment was never political,” she said during an interview with Radio con Vos. “Nahuel did not come to destabilize Venezuela, he simply wanted to get to know the country.”

Argentina’s complaint before the ICC is particularly aimed at Venezuelan Attorney General Tarek William Saab, who had a feud with Argentine Security Minister Patricia Bullrich over Gallo’s case last week.

Saab announced that the public ministry he heads would investigate Bullrich and Foreign Minister Gerardo Werthein over an alleged plot against Venezuela of which Gallo is being accused of being part of.

Tensions between Argentina and Venezuela over Gallo’s case have escalated since the detention of the military policeman at a border crossing. The Venezuelan government accused him of being “on a mission” in the country, while Gallo’s relatives say he was visiting his partner and son. The Milei administration  insisted that Gallo had been legally authorized to enter the country, while Caracas claims that he was not.

Bullrich called Saab the “chief prosecutor of a murderous narco-dictatorship. Recent tensions over the case included the Argentine government accusing one of its former ambassadors to Venezuela, Oscar Laborde, of treason after he arranged for the delivery of a letter to Gallo.

The complain was made public on the same day that Eduardo González Urrutia, the Venezuelan opposition presidential candidate in the controversial 2023 elections,, confirmed he would meet with President Javier Milei in Buenos Aires on Saturday. Venezuelan President Nicolás Maduro, who declared himself the winner without presenting any evidence, is set to take office on January 10.

Thursday’s was the second complaint the Argentine government files against its Venezuelan counterpart before the ICC.

Earlier in December, Milei’s administration filed a grievance with the tribunal in The Hague for the siege of the embassy in Caracas and threats made against six Venezuelan opposition members living inside the compound. All six of them had requested that Argentina grant them political asylum.