2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/206975In this Letter we examine the arrival directions of the most energetic cosmic rays (E > 2 * 10^19 eV) detected by several air shower experiments. We find that data taken by different air shower arrays show positive correlations, indicating a non--uniform arrival direction distribution. We also find that the events with energy $ > 4 * 10^19 eV exhibit a correlation with the general direction of the supergalactic plane, where a large number of potential sources is located. If confirmed by data from other experiments our results would support models for the extragalactic origin of the highest energy cosmic rays.7 pages; 1 figure included; uuencoded, compressed PostScript file; final version, corrected in some points, accepted for publication in Phys.Rev.LettAstrophysicsHigh Energy Physics - Phenomenologytext