Reality Star's Brother May Have Frozen to Death He crashed his car and 'wandered into the rocky, frigid desert' By Michael Harthorne, Newser Staff Posted Dec 12, 2015 11:53 AM CST 18 comments Comments Michael Cavallari (Grand County Sheriff's Office via AP) (Newser) – Authorities say exposure to the elements might have killed Michael Cavallari, brother of reality TV star Kristin Cavallari, after he "likely wandered into the rocky, frigid desert," CBS News reports. Cavallari was last seen early Nov. 27 at a convenience store in Utah, according to NBC News. His car was found later that day, crashed in a ditch five miles down a dirt road off the interstate. Fox News reports a body believed to be Cavallari's was found Thursday at the bottom of a steep, rock-covered hill. Authorities say there were no signs of major trauma on the body, and no suicide note, drugs, or alcohol were found, according to NBC. However temperatures in the area where the body was found had been dipping into the teens with highs only in the 30s. And CBS notes the body was clad only in a light shirt, jeans, and tennis shoes. The area where what is believed to be Cavallari's body was found is called the Salt Wash, CBS reports. It can be dangerous even for experienced hikers with the proper equipment and clothing. "I actually have the busiest search and rescue team in the state," Sheriff Steve White says. "A lot of the rock formations look the same, so it's easy to get lost out there." If Cavallari was trying to get back to the interstate, he went the wrong way. The body was found almost three miles from his car. "I don't know what his mental state might have been, with possible hypothermia," Fox quotes White. According to NBC, it could be weeks before the medical examiner confirms the body is Cavallari's and determines a cause of death. CBS reports Cavallari disappeared days after he was arrested for allegedly threatening a woman with a shotgun.