Southwest / Leblon, Brz being encounter — June 21, 1970

This Leblon coastal report has a date conflict: Hatch gives June 21, 1970, at 11:20 a.m.; investigator Walter Buhler's fuller account gives June 27 at 11:40. Buhler said he interviewed three adults that afternoon after a newspaper alerted him. Aristeu and Maria Nazaré Machado, neighbour João Aguiar and five Machado daughters reportedly watched from a home above Avenida Niemeyer. They initially interpreted a spray-producing object on the sea as a boat in trouble. The metallic disc, estimated at four to six metres across and several hundred metres offshore, had a transparent cupola. Two small, stocky, helmeted figures in shining grey garments appeared to gesture or work inside. Aguiar went to telephone for assistance and returned before it departed. The object reportedly skimmed across the water before flying southeast; no sound was attributed to it. Maria subsequently described a hoop-like object and a small yellow oval moving on the water, including a separate greenish part. Those observations followed the main craft's departure. Buhler also recorded a launch retrieving a red cylinder, without establishing its identity or a connection. His explanations involving probes or underwater bases were speculation. The testimony is detailed, but the retrieved account does not provide independently authenticated craft, occupants or recovered material.