Based on public record from the ongoing preliminary hearing: video places Robinson on UVU campus (Chick-fil-A, clothing change, suspicious movements, sniper position on roof); DNA matches him on the rifle, casings, towel; rifle recovered nearby matches weapon used. Earlier ballistics inconclusive on damaged fragment, but DNA + video + other evidence (footprints, palm prints, statements) make it overwhelmingly likely he is the killer.
Odds he is NOT: near zero. Presumption of innocence until proven, but facts speak loudly.