The 2009 Sedona Sweat Lodge Deaths
The retreat's leader was convicted of negligent homicide in 2011. Lakota religious authorities had publicly warned for sixteen years beforehand about the dangers of unqualified operators running commercial versions of the ceremony.
James Arthur Ray's conviction for negligent homicide (22 June 2011), following the 8 October 2009 retreat
A fatal 2009 incident at a paid self-help retreat in Arizona, where three participants died in an improperly run sweat lodge ceremony.