Michael Cavallari, the brother of reality star Kristin Cavallari, was found dead on Thursday in Utah, and law enforcement sources think they know what happened.
According to TMZ, the theory is that the 30-year-old crashed his car in the Utah desert about two weeks ago and started walking, possibly looking for help. He left his cell phone in the car, but reception is poor in the vicinity.
Temperatures in the area range from the teens to the 30s, and authorities believe he was killed by the elements.
Michael did not leave a suicide note and there were no drugs or alcohol found in his vehicle.
His official cause of death will not be released until toxicology reports come back.
After news broke of her brother’s death, Kristin wrote on Instagram, "My heart is in a million pieces. Mikey, I could always count on you to make me laugh. You had such a good heart and will be forever missed. I'm at a loss for words but I know u are in a better place and finally at peace. I love u so much RIP.”