Kristin Cavallari’s brother Michael found dead

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GRAND COUNTY, Utah -- The brother of reality star Kristin Cavallari and brother-in-law to Chicago Bears' quarterback Jay Cutler has been found dead just a few days after he was reported missing, according to his sister's statement to E! News.

"We want to thank everyone for their love, support and prayers during this very difficult time," Kristin Cavallari said in a statement to E! News. "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."

Michael Cavallari (Photo: Grand County Sheriff’s Office)

Michael Cavallari (Photo: Grand County Sheriff’s Office)

Concerns for the whereabouts of Michael Cavallari, of San Clemente, Calif., were raised when authorities found Cavallari’s vehicle on Nov. 27.

CHICAGO, IL - SEPTEMBER 09: (L-R) Jay Cutler and Kristin Cavallari attend Michigan Avenue Magazine's Fall Fashion Issue Celebration With Kristin Cavallari at W Chicago Lakeshore on September 9, 2014 in Chicago, Illinois. (Photo by Jeff Schear/Getty Images for Michigan Avenue Magazine)

CHICAGO, IL - SEPTEMBER 09: (L-R) Jay Cutler and Kristin Cavallari attend Michigan Avenue Magazine's Fall Fashion Issue Celebration With Kristin Cavallari at W Chicago Lakeshore on September 9, 2014 in Chicago, Illinois. (Photo by Jeff Schear/Getty Images for Michigan Avenue Magazine)

Deputies discovered a 2014 Honda Civic about five miles south of exit 175 on I-70. The vehicle was registered to Cavallari, according to the sheriff’s office. Police say Cavallari's cell phone and laptop were inside the car.

Credit card transaction receipts led investigators to a convenience store in Monticello where security footage positively identified the driver as Cavallari.

According to KSTU, authorities in Grand County confirm the man’s sister is Kristin Elizabeth Cutler, who appeared in “The Hills." Cutler is married to Jay Cutler, an NFL quarterback for the Chicago Bears.

After initial reports of her brother's disappearance, Cavallari issued a statement to fans on her Instagram account, thanking them for their prayers and concern.

"I appreciate all the concern, thoughts, and prayers that have been extended to me and my family. We remain hopeful and I will share any news that we receive. I have such gratitude for all those that have shared their support," she captioned a childhood photo on Instagram of her with her brother.