Two months after Kristin Cavallari's brother Michael was found dead in Utah, the medical examiner's office determined that the 30-year-old had succumbed to hypothermia.

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Grand County Sheriff Steven White told ABC the death was accidental, adding that they're still waiting on toxicology results to determine whether or not he had drugs in his system at the time.

Life & Style first reported that the Laguna Beach alum's older brother was missing on Dec. 6, though the family “remained hopeful” he would be found alive. His death was confirmed on Dec. 10.

Our continued thoughts are with his loved ones in the wake of this tragedy.