Kristin Cavallari is experiencing a wide range of emotions these past few days. She and hubby Jay Cutler welcomed a baby girl into their world on November 23. Sadly, just four days later her brother, Michael Cavallari, 30, was reported missing.

Brother of Kristin Cavallari reported missing in Utah. #Bears https://t.co/5IqLdQGdLr pic.twitter.com/FzlgnprsE5

— Chicago Sun-Times (@Suntimes) December 6, 2015

An NBC report explains that on November 27, an abandoned vehicle was reported in Grand County, Utah. Although it was registered to an individual in San Clemente, California, authorities there determined the car had been driven by Kristin Cavallari’s brother.

Credit card transactions led investigators to a convenience store in Monticello, Utah, where security footage showed Michael Cavallari as the driver of the vehicle.

Grand County Sheriff Steven White told the Deseret News the car appeared to have hit a large rock on the side of the road. The vehicle was running when found, and the air bag had deployed. Michael Cavallari’s laptop and cell phone were also found inside, according to police.

ICYMI: @KristinCav shares a sweet photo of her newborn daughter, Saylor James: https://t.co/9sv7yzDRH6 pic.twitter.com/ZMPKmaWd09

— InStyle (@InStyle) December 2, 2015

Kristin Cavallari and her family are no doubt frantic. Just days ago her biggest care in the world was missing a high school reunion, and basking in the warmth of new baby love.

Anyone with information on Kristin Cavallari’s brother, Michael Cavallari, is asked to contact the Grand County Sheriff’s Office at (435) 259-8115 or Grand County Sheriff