BUENOS AIRES, April 22 - Argentine authorities said on Wednesday that a Colombian national connected through personal ties to a participant in the killing of Colombian senator and presidential hopeful Miguel Uribe has been arrested and will be extradited to Colombia.
The detainee was identified by Argentine officials as Brayan Ferney Cruz Castillo, according to a notice published on the Argentine Prosecutor General's Office website. The Argentine announcement said Cruz would be transferred to Colombian custody through extradition procedures.
Colombian prosecutors subsequently clarified the limited nature of Cruz's connection to the attack on Uribe. A source at the Colombian Attorney General's office told investigators Cruz is not directly implicated in the assassination plot itself but is the romantic partner of Katherine Andrea Martinez, who was convicted for her role in the killing.
Martinez received a prison term of 21 years and two months after being found guilty of attempted aggravated homicide, arms trafficking, and using minors to commit a crime. The sentencing and conviction are part of the broader legal response to the attack that left Uribe with fatal gunshot wounds to the head. Uribe died in August 2025, injuries that followed an attack two months earlier while he was campaigning in the Colombian capital, Bogota.
Argentine police said Cruz entered Argentina through an "unauthorized border crossing" and that he was detained when he attended a courthouse where he was required to report every 15 days in relation to a separate charge of "vehicle theft." The circumstances of his arrest relate to the reporting requirement rather than a direct criminal charge connected to the Uribe attack, according to the information released by Argentine authorities.
Investigations in Colombia have continued alongside domestic prosecutions. In March, the Colombian Attorney General's office issued arrest warrants for seven leaders of the Segunda Marquetalia, a splinter group of the former FARC guerrilla organization, accusing them of alleged roles in Uribe's assassination. The attack itself has been described by officials as the country's most serious episode of political violence in decades.
This development highlights an ongoing transnational dimension to the legal and investigative response: an individual detained abroad on unrelated local obligations who also holds a personal link to a convicted participant in a major political killing. Argentine authorities have formalized the extradition intent, while Colombian prosecutors continue to distinguish between direct involvement in the attack and associative links disclosed during the wider inquiry.