La Matanza, Province of Buenos Aires

Official source account — 2020 annual report, printed page 115: An object was discovered only after reviewing a photograph from La Matanza. CIAE found apparent transparent wings held vertically and proposed an insect making a sharp turn near the camera. The agency described that manoeuvre as a possible interpretation rather than an established observation. Its Type B conclusion rested on the visible morphology and accidental photographic capture, with no reproducible scene available. The summaries distinguish reported observations from the agency’s proposed explanations. Source Type A/B ratings describe explanatory confidence and are not encounter classes.