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Michael Cavallari, the brother of Kristin Cavallari and brother-in-law of Jay Cutler, has been found dead.

Kristin Cavallari released a statement to E! News saying:

We want to thank everyone for their love, support and prayers during this very difficult time. We have just been informed by the authorities my brother’s body has been found. This is a very painful time and we are still processing it all. We kindly ask everyone please respect our privacy during our time of grieving.

Authorities in Utah say the medical examiner will  determine the cause of death.

The search crews were searching the Salt Wash area when the body was found, authorities say.  “The terrain where the body was located is a steep and very rocky area.”

“My heart is in a million pieces,” Kristin Cavallari said in a post on Instagram.  “Mikey, I could always count on you to make me laugh. You had such a good heart and will be forever missed.”

Michael Cavallari was reported missing three days ago. His car was found on the side of an interstate in Utah, the day after Thanksgiving.

The car was running and the airbags were deployed. Police say Cavallari’s laptop and cell phone were inside.

Officials say the car appeared to have hit a large rock.