Carlos Alberto Marquez Nunez, one of three individuals convicted for the murder of 24-year-old hairdresser Marcos Argenis Vallez Perez, has been apprehended by the Caxias Civil Police in Rio Grande do Sul. Vallez was killed in August 2021 in the São Bento neighborhood of Boa Vista, where he was found dead with his hands tied behind his back with a shirt, following gunfire that witnesses reported as six shots.

During the investigation, Carlos was detained but later released and managed to escape to Rio Grande do Sul. His conviction came in October 2025, which indicates a significant delay in the judicial process, highlighting challenges in the Brazilian legal system. The authorities have linked him to the Venezuelan criminal faction Tren de Aragua, suggesting implications for cross-border crime and gang-related violence.

This case illustrates ongoing issues of organized crime in Brazil, particularly in regions close to Venezuela where such factions operate. The arrest of Carlos Alberto Marquez represents a continued effort by Brazilian law enforcement to combat gang activity and violence, contributing to the broader fight against organized crime in the country, and signaling that law enforcement agencies are making progress in apprehending fugitives linked to violent crimes.