The Colares UFO Flap (1977)

For months in 1977, residents of a small island town at the edge of the Amazon reported luminous objects moving deliberately through the night sky—and, in some cases, directing beams at people below.

The Colares UFO Flap—also known locally as the Chupa-Chupa incidents and officially investigated as Operation Saucer (Operação Prato)—took place in the Brazilian Amazon region, primarily on the island town of Colares in the state of Pará. The core phase of the events occurred from late August through December 1977, when the activity was most concentrated in Colares, with the Brazilian Air Force investigation extending into early 1978. Earlier sightings in nearby coastal towns earlier in 1977 are often cited as precursors to the Colares outbreak. What distinguishes Colares from many other UFO cases is the combination of mass sightings, physical injuries to civilians, medical documentation, and a confirmed Brazilian Air Force investigation.

Across Colares and nearby towns such as Vigia and Mosqueiro, hundreds of sightings were reported during 1977. Some later summaries describe totals exceeding 400 reports, but the exact count varies by source and by what is being counted (formal reports versus informal testimony). The Brazilian military response produced photographs, film footage, sketches, medical reports, and eyewitness testimony—much of which remained classified for decades.

Initial reports emerged from coastal and river communities near the Amazon River and Marajó Bay. Fishermen and farmers described silent, luminous objects hovering over water or treetops, often moving erratically and at low altitude. These early encounters escalated rapidly as the phenomena concentrated around Colares.

By October and November 1977, activity reached an intense peak. Nightly encounters were reported, with glowing objects allegedly targeting individuals outdoors. Beams of light were said to cause intense heat, paralysis, dizziness, and physical injury. Panic spread throughout the community. Residents boarded up windows, extinguished lights at night, fired weapons at the objects, and avoided leaving their homes after sunset.

Medical clinics became overwhelmed. Contemporary medical testimony and later investigations describe dozens of residents seeking treatment for unusual symptoms, with some broader summaries suggesting higher totals over time. The most consistently documented cases—approximately 35 to 40 individuals treated by local physician Dr. Wellaide Cecim Carvalho—showed recurring patterns of burns, puncture wounds, weakness, and anemia-like symptoms. Exact totals remain uncertain due to the informal nature of record-keeping during the crisis. Victims frequently described feeling drained or weakened immediately following exposure.

Witnesses consistently described a range of craft shapes, including disc-shaped, cylindrical, egg-like objects, and small glowing orbs. Sizes varied from compact spheres to much larger craft, with some witnesses estimating extremely large objects. Because size estimates were made under stress and often at night, reported dimensions vary widely between accounts. The objects emitted multicolored lights—commonly red, green, and blue—and frequently projected narrow beams toward the ground.

These beams were believed to extract energy or blood, giving rise to the nickname chupa-chupa. Victims often displayed two small puncture marks, circular burns, hair loss, nausea, disorientation, and extreme fatigue. In some cases, individuals were immobilized for hours. Several witnesses also claimed to see humanoid figures inside the craft or strange flying entities accompanying them.

Dr. Wellaide Cecim Carvalho, the town’s primary physician, treated dozens of victims and documented consistent symptoms, including radiation-like burns, puncture wounds on the neck or arms, and low hemoglobin levels suggestive of blood loss. She later stated that many patients felt as though something vital had been drained from their bodies.

Additional testimony came from fishermen who described lights pursuing boats, farmers struck while working at night, and families who observed craft hovering just meters above their homes. Some residents also reported ground-level effects following close approaches by the objects, though physical landing evidence was described primarily through eyewitness accounts rather than formal documentation.

In September 1977, the Brazilian Air Force formally launched Operation Saucer, led by Captain Uyrangê Hollanda, deploying more than 20 personnel to Colares. The team conducted hundreds of interviews, collected soil and material samples, and documented sightings through photographs, film footage, and detailed drawings.

According to later statements by Hollanda and other officers, the team directly observed multiple unidentified luminous objects. Hollanda also described an episode involving an object associated with the water, a detail that became one of the most discussed aspects of the case. Official documentation described the events as unidentified luminous phenomena and recorded numerous observations and interviews, without providing a definitive public explanation for what the witnesses and investigators reported.

The operation ended suddenly in January 1978. Many files were treated as restricted for years; partial releases began in the late 1990s, with additional disclosures commonly cited around 2004, and archival holdings later consolidated under Brazil’s National Archives (Arquivo Nacional). In a 1997 interview, Hollanda suggested the phenomena exhibited intelligent control and advanced capabilities. He died by suicide two months later, a fact that continues to cast a long shadow over the case.

Over time, the Colares UFO Flap has been widely interpreted by UFO researchers as evidence of non-human intelligence operating with apparent intent. The repeated targeting of individuals, the physiological effects reported, and the direct involvement of military observers have led many to regard Colares as a benchmark case involving intrusive or extractive aerial phenomena.

The events influenced Brazilian UFO research policy and inspired works such as UFO Danger Zone: Terror and Death in Brazil by Bob Pratt. Documentaries, interviews, and declassified military files continue to renew interest in the case. In recent years, Brazilian officials have referenced historical UFO incidents in broader national security discussions, keeping Colares relevant decades later.

Nearly fifty years on, the Colares UFO Flap remains one of the most unsettling and consequential UFO events ever recorded.

Sources include Brazilian Air Force archival materials held by the Arquivo Nacional, contemporary medical testimony from Colares, interviews conducted in the 1990s with Operation Saucer personnel, and later historical analyses by Brazilian and international UFO researchers. The injuries, the fear, and the official acknowledgment together form a case that resists dismissal and continues to raise serious questions about non-human activity in Earth’s airspace.