Bacabay 3570 and the CIA's 43-Year Silence on Héctor Hidalgo Solá

By Desmond Okafor · September 9, 2026

The CIA held the exact address of the torture center where Argentina's ambassador to Venezuela was murdered, but the location remained hidden from the judiciary until 2020.

Héctor Hidalgo Solá was a man of state who became a ghost in his own capital. He was kidnapped, tortured, and murdered in July 1977, a betrayal that cost him his life and denied his family the location of his remains for over four decades.

I am working from the archive's curated description of a CIA intelligence cable, not the original pages. The record, dated September 8, 1977, is a window into a crime the Argentine state spent years denying and the United States spent decades withholding.

Bacabay 3570

Héctor Hidalgo Solá, the Argentine diplomat and politician whom president Jorge Rafael Videla had appointed as Ambassador to Venezuela in 1976, returned to Buenos Aires only to be swallowed by the regime he served. The public record shows he disappeared on July 18, 1977. The record identifies the architects of this disappearance as agents of the State Intelligence Secretariat (SIDE), the premier intelligence agency of the Argentine Republic and head of its National Intelligence System.

According to the record, after his abduction, Sola was taken to a house at "Bacabay 3570 in the federal capital." This address is not a mere detail; it is the coordinates of a crime scene. The record notes that this house is a location which "SIDE rents and uses for official operations of Gordon's group," an organization not further detailed on the record.

For forty-three years, the Argentine judiciary lacked the evidence to pinpoint this location. It was only through the release of this CIA cable that Judge Daniel Rafecas, a federal judge, was able to announce on June 11, 2020, the discovery of a clandestine detention and torture center that had been operational since at least 1976. The record provided the one piece of evidence the junta had successfully scrubbed from the domestic archives: the exact street address of a slaughterhouse.

Document imagery from nsarchive.gwu.edu From the files: nsarchive.gwu.edu

The "Unauthorized" Fiction

The record carries a specific, jarring claim: that the kidnapping and assassination occurred "Without SIDE Knowledge or Authorization." This phrasing is a masterclass in intelligence sanitized for the file.

The public record establishes that SIDE was the entity responsible for the house at Bacabay 3570. The record itself confirms that SIDE "rents and uses" the house. The line is clear: the State Intelligence Secretariat provided the physical infrastructure—the walls, the electricity, the secrecy—for the murder of their own country's ambassador.

The desk's reading is that the claim of "unauthorized" action is a narrative fiction designed to provide plausible deniability for the Argentine junta. If the operation is "unauthorized," then the leadership of SIDE can claim they were betrayed by rogue elements. However, the logistical reality contradicts the label. You do not rent a house for "official operations" and then find it accidentally used as a torture chamber by strangers. The facility was a tool of the state; its use was the policy of the state.

Gordon's Group

The record attributes the house's use to "Gordon's group." Beyond this name, the record is silent. In the world of high-level intelligence cables, a vague group designation is rarely an accident. Usually, a cable of this nature would identify the specific military officers or intelligence chiefs in charge of a facility, especially one used to murder a sitting ambassador.

The pattern suggests the CIA was deliberately obscuring the command structure of Gordon's group to protect a specific intelligence asset or a liaison relationship. By naming a "group" rather than a person, the agency could report the event to its superiors without creating a permanent, searchable record of the specific Argentine officer who had become their source or partner. The identity of "Gordon" was more valuable to Langley than the transparency of Sola's murder.

The Evolution of the Purge

Sola's murder did not happen in a vacuum. The public record shows a tight temporal link between this assassination and the broader regional conspiracy known as Operation Condor. Only weeks before the CIA cable was sent, in August 1977, the Condor countries had reached an agreement to regulate their "subversive targets."

Traditionally, Operation Condor targeted leftist militants, students, and union leaders—the "subversives" who existed outside the halls of power. But the murder of a sitting ambassador, a man appointed by Videla himself, represents a shift. The desk's reading is that Sola's death signals an evolution of Operation Condor from a campaign against external enemies to a mechanism for purging high-level state officials who deviated from the regime's hardline. Sola was not a guerrilla in the mountains; he was a diplomat in a suit. When the regime decided he was an obstacle, the same machinery used to break students was turned on a peer.

Risk Management

The record is not marked as a standard intelligence report; it is marked "Exclusive for." This designation is the key to understanding why the address of Bacabay 3570 stayed out of the hands of judges for four decades.

An "Exclusive for" marking indicates that the information was not intended for general distribution across the agency, but was a risk-management brief for a small circle of US handlers. The CIA was not documenting a human rights tragedy for the sake of the record; they were noting a liability. They knew exactly where the ambassador had been taken, and they knew the "unauthorized" label was a lie, but they kept that knowledge in a closed loop.

If the shape of this file is what it appears to be, the withheld pages are protecting the specific names of the men in Gordon's group—men who likely continued to serve as CIA assets long after the junta fell. The silence of the US government on the location of Bacabay 3570 was not a failure of intelligence, but a success of asset protection.

The desk's reading is that the CIA prioritized the continuity of its intelligence pipeline over the possibility of a criminal prosecution. They held the map to the torture center in a locked drawer while Sola's family searched for a grave. This is the recurring logic of the Cold War in the Southern Cone: the specific location of a body is a secondary concern to the preservation of a source. The cost of that preservation was forty-three years of state-sponsored amnesia, paid for by the man who vanished from Buenos Aires in July 1977.