Case files — Latin America

This is the strongest non-US region in the world for official documentation, because Brazil, Chile and Uruguay all ran state bodies and released files.

1. Colares, Pará, Brazil — Operação Prato, 1977–78

Credibility: B (state operation, mass witnesses, photos) · Status: officially closed as "no phenomenon"

• Background: residents of Colares island reported lights ("chupa-chupa" — "sucker-sucker") that they blamed for scars and lesions; they organised night vigils, bonfires and fireworks hoping to drive the lights away. The mayor asked the Air Force for help.
• What the state did: the Brazilian Air Force ran Operação Prato ("Operation Saucer") in two phases — 20 Oct–11 Nov 1977 and 25 Nov–5 Dec 1977 — with the National Information Service (SNI) involved. Operational commander: Capt. Uyrangê Hollanda; strategical chief Brig. Protásio Lopes de Oliveira. Several photographs of lights were recorded; the military remained sceptical.
• Outcome: after roughly four months the operation closed finding no unusual phenomena. The official documents are held by the Brazilian National Archives and can be requested.
• Why it still circulates: Hollanda gave detailed interviews in 1997 describing structured craft, beams and injuries, then died shortly after; the contrast between his account and the official "no phenomenon" outcome is the case's enduring hook.
• Caution: the operation's own conclusion contradicts the interview material — quote both, do not merge them.

2. "Night of the UFOs" — Brazil, 19 May 1986

Credibility: A (multi-radar + interceptors + civil aviation) · Status: unresolved (instrumented)

• Timeline: from ~20:15 BRT, air traffic control at São José dos Campos (SJK) saw three bright lights hovering over the airport; Guarulhos detected contacts nearby. The controller dimmed runway lights and observed the objects approach, re-illuminating them and seeing the objects retreat.
• Civil aviation: at 21:08 an EMB-121 Xingu (PT-MBZ) inbound from Brasília reported bright red lights at radial 150 of SJK's VOR moving east–west near the coast. The pilot was Col. Ozires Silva, founder of Embraer, returning from a meeting with President José Sarney. He attempted to approach the objects himself, unsuccessfully; he described them as "big red stars".
• Military: by 21:39 Santa Cruz AFB was on alert; Anápolis AFB later reported radar echoes that CINDACTA I's military operations centre was not seeing. At 22:27 an F-5E of 1º/1º GAvCa ("Jambock"), callsign JB17, scrambled from Santa Cruz. The pilot reported a radar plot and visual contact with a white light that climbed, holding 16–19 km away and 10° above him to 10,000 m, changing white → red → green → white, and was followed 290 km out to sea until bingo fuel.
• Official involvement: FAB (Brazilian Air Force) air-defence chain of command; the Air Force Minister held a press conference (attended by FAB pilots and controllers on duty), publicly committed to investigating, and promised a complete dossier within 30 days. Documents survive in the National Archive; Brazil's earlier SIOANI (Air Force UFO investigation system, created 1969) was rediscovered through the release of documents to that archive.
• Leading conventional explanations: none has been accepted. Candidates floated: aircraft lights, balloons, atmospheric effects. The multi-sensor, multi-station character is what makes it the best Latin American case.
• Open item: the frequently repeated "21 objects" figure for that night comes from secondary accounts; the official dossier text was not retrieved for this pack — treat the number as unverified.

3. Varginha, Minas Gerais, Brazil — January 1996

Credibility: C/B (many witnesses, no released file) · Status: unresolved (documented as a controversy)

• Residents reported a strange creature and possible craft; the case escalated within days into military-involvement and cover-up claims, with three young women among the most cited witnesses.
• Official status: no released Brazilian government dossier establishing the event; campaigners have continued to demand the files, and the case remains a live disclosure-campaign issue in Brazil (covered again internationally in 2026).
• Use on the site: present as a disclosure-politics case, not an evidence case. This is the honest framing: a mass-witness story with no document chain.

4. Chilean Navy helicopter IR video — Chile, 11 November 2014

Credibility: A (military IR sensor, 9-minute recording, two officers) · Status: unresolved (instrumented) — contested

• Platform: Airbus Cougar AS-532 naval helicopter on a daytime coastal patrol west of Santiago, ~4,500 ft, 132 knots, clear air, cloud base 10,000 ft, temperature ~10 °C.
• Sensor: Wescam MX-15 FLIR turret (the same class of camera used on surveillance drones), operated by a naval technician; 9 minutes 12 seconds of footage, mostly infrared.
• Witnesses: two experienced Navy officers, who filed written reports. Captain described a "flat, elongated structure" with "two thermal spotlights like discharges that did not coincide with the axis of motion"; the technician described "white with a semi-oval shape on the horizontal axis".
• Corroboration attempt: both the helicopter's own radar and two ground radar stations tracked the helicopter but not the object, within radar range. The pilot repeatedly tried the civil multi-national air-to-air channel — no response. No other traffic in the sector.
• The plume: at ~8 minutes the object appears to eject material; the IR signature indicates a temperature above ~50 °C; experts examined ruled out a bird, insect, drone, parachute or hang glider, and confirmed a three-dimensional form "with control in its movements" (Air Force photogrammetric department).
• Official involvement: footage handed to CEFAA immediately; analysis by astrophysicist Luis Barrera, the Air Force photogrammetric service, DGAC engineering, a meteorologist, a nuclear chemist, and — via GEIPAN — French video analysts François Louange and colleagues. The Navy confirmed no joint exercises and no foreign drone operation.
• Leading dissenting explanation: GEIPAN's analysts proposed a medium-haul aircraft on approach to Santiago dumping cabin wastewater, with the two hot spots at the standard engine spacing. CEFAA and Chilean experts rejected it: the aircraft would have appeared on primary radar, required a landing clearance, and normally would have answered radio; Chilean regulation requires DGAC permission to discharge anything; and water at that air temperature would not form the observed plume.
• Verdict: the committee classified it as a UAP — "we do not know what it was, but we do know what it was not" (Gen. Ricardo Bermúdez, CEFAA director).

5. Argentina — 1962 Bahía Blanca wave and 1965 Buenos Aires

Credibility: B · Status: unresolved (documented), archival situation poor

• May 1962: sightings on 11 and 18 May at Espora Air Base; on 12 May three truck drivers on Route 35 described an illuminated, railroad-car-like object on the ground that rose and crossed the road 4 m above them, then split into two parts that flew off in different directions; on 21 May La Nueva Provincia photographer Miguel Tohmé took two photographs of a soccer-ball-sized object in Bahía Blanca, one of which ran on the front page; 21–23 May sightings at Port Belgrano Naval Base.
• 16 July 1965: two bright discs hovered over Buenos Aires for ten minutes, then departed at high speed. The Seventh Air Brigade scrambled three Gloster Meteor jets from Morón Air Base to investigate — with negative results.
• 1995 Bariloche: an alleged 31 July 1995 encounter at Bariloche was cited in a newly released Pentagon document batch — an example of a Latin American case entering US files.
• Honest caveat: an academic review of Argentine declassification argues that the armed forces' official archives contain almost no UFO documentation, i.e. the events are press-recorded, not state-archived. Treat Argentina as B-minus.

6. Uruguay — CRIDOVNI (state body, 1979–)

Credibility: A (institutional) · Status: operating

• The Uruguayan Air Force Commission for the Reception and Investigation of Complaints of Unidentified Flying Objects (CRIDOVNI) has operated under the Air Force since 1979, making it one of the longest continuously running government UAP offices anywhere.
• It has published analysis of official cases (a 2002 volume examining 19 official cases is cited in community sources) and has engaged with the US AARO on case exchange.
• Uruguay also released UFO files publicly in 2009 — one of the earlier Latin American releases.
• Use on the site: CRIDOVNI is the best "small country, long memory" example: a standing body inside a small air force with 45+ years of institutional continuity.

7. Mexico

Credibility: mixed (D to B) · Status: no standing body

• 12 August 1883 — Zacatecas (Bonilla observation): astronomer José Bonilla photographed "more than 300 dark objects" crossing the Sun using wet plates at 1/100 s. Often called the earliest UFO photograph. Modern Mexican astronomers proposed the most economical explanation: a very close comet breaking up (fragments + birds). Rating: D with a real photographic artifact.
• 25 August 1974 — Coyame: reports of a mid-air collision between a UFO and a light aircraft, followed by alleged military recovery and cover-up. Historians tie the episode to a drug-smuggling Cessna crash and its military recovery. Rating: D.
• 5 March 2004 — Campeche: Mexican Air Force pilots hunting drug flights with IR equipment recorded 11 unidentified objects at ~3,500 m over southern Campeche; the Defence Department released a press statement and tape in May 2004. Leading explanation: burn-off flares from offshore oil platforms in the Gulf of Mexico; science writer Michael Shermer noted witness accounts "varied wildly... like a fisherman's tale, growing with each retelling". Rating: D, and useful as a teaching case about how a government release is not the same as government confirmation.

Cross-reference

Brazil's SIOANI (created 1969) is the earliest institutional Latin American programme found in this research and is the ancestor of the whole Brazilian file series now at the National Archive.

8. Caso Collahuasi, northern Chile — April 2013

Credibility: B (multiple witnesses + photographs + official study) · Status: unresolved (documented) — "not made by man"

• Setting: the Collahuasi copper mine, ~14,000 ft up on the Andean plateau of northern Chile. Several workers observed an unusual object for a couple of hours over a period of days in April 2013, describing it hovering around 2,000 ft, making unusual manoeuvres, and at one point appearing to transform into a silvery orb.
• Evidence: high-resolution photographs were taken and handed to CEFAA, Chile's standing UAP committee. CEFAA ran a long photographic analysis with outside specialists and, in a study publicised in 2014–15, concluded the object was not a drone, not a weather phenomenon, and "not made by man" — while stopping short of saying what it was.
• Official involvement: CEFAA (Comité de Estudios de Fenómenos Aéreos Anómalos) under the DGAC — the same standing body that handled the 2014 Navy IR case. This is therefore a genuine CEFAA-file photographic case, and it resolves the "Caso Collahuasi — primary documentation not retrieved" caveat that previously kept it out of this pack.
• Leading conventional readings: none published has displaced CEFAA's photographic assessment; the residual possibilities are an unidentified conventional drone or an atmospheric effect that failed CEFAA's own checks. The photographs themselves are the evidence, and CEFAA published its reading of them without identifying the object.
• Why it belongs here: it is the photographic counterpart to Chile's 2014 IR case — the same committee, a different sensor (still photography, high altitude, clear air) — and one of the few Latin American cases where a state body studied the images and declined to explain them.
• Sources: sources.md → HuffPost "Chile Releases Official Study on UFO Photos" (2014); Mirror / Yahoo "Chile UFO: Government confirm mysterious object is NOT made by man" (2015); Fox News (2015).