New details are emerging about the tragic passing of Michael Cavallari last year.
As we previously reported, Grand County officials have ruled that the death of Kristin Cavallari's brother was accidental, explaining that the official cause was hypothermia.
And now, we're learning more about her late sibling's final moments.
According to a report by county authorities, investigators found that the troubled man was naked when they discovered his body in the Utah wilderness.
Related: Kristen Shares A Heartfelt Message About Her Brother
Police say his clothing was on the ground, and officials believe that before he died he suffered from what's called paradoxical undressing. This is something that happens in 20 to 50% of hypothermia deaths.
During moderate to severe cases, the victim becomes disoriented and takes off their clothes, which causes them to lose body heat even faster.
We're also learning more about what Michael might've been doing in Utah before he died.