Program Note: Make sure to watch Gary Tuchman's report tonight on AC360° at 10 p.m. ET.
An investigation into the deaths of three people who spent up to two hours inside a "sweat lodge" at an Arizona retreat has been elevated from an accidental death investigation to a homicide inquiry.
In North America, most Native American tribes use the term "sweat lodge" to refer to a dome-shaped structure where the intimate ritual of the sweat takes place.
Gary Tuchman visited a sweat lodge in Cornville, AZ, just outside of Sedona, to report on the ritual.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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