From the Dave Matthews Band website:
We are deeply saddened that LeRoi Moore, saxophonist and founding member of Dave Matthews Band, died unexpectedly Tuesday afternoon, August 19, 2008, at Hollywood Presbyterian Medical Center in Los Angeles from sudden complications stemming from his June ATV accident on his farm near Charlottesville, Virginia. LeRoi had recently returned to his Los Angeles home to begin an intensive physical rehabilitation program.
Rest in Peace.
Update (8/21): Listen to a sweet solo from LeRoi on an unreleased Soko track.