BOGOTÁ, Colombia  Files provided by Colombian officials from computers they say were captured in a cross-border raid in Ecuador this month appear to tie Venezuela’s government to efforts to secure arms for Colombia’s largest insurgency.

Officials taking part in Colombia’s investigation of the computers provided The New York Times with copies of more than 20 files, some of which also showed contributions from the rebels to the 2006 campaign of Ecuador’s leftist president, Rafael Correa.

If verified, the files would offer rare insight into the cloak-and-dagger nature of Latin America’s longest-running guerrilla conflict, including what appeared to be the killing of a Colombian government spy with microchips implanted in her body, a crime apparently carried out by the rebels in their jungle redoubt.

The files would also potentially link the governments of Venezuela and Ecuador to the leftist guerrillas of the Revolutionary Armed Forces of Colombia, or FARC, which the United States says is a terrorist group and has fought to overthrow Colombia’s government for four decades.