Three days after being reported missing in Utah, Kristin Cavallari's brother Michael has been found dead. Law enforcement says that they located the body in a steep and very rocky area around 10:30 AM, reports TMZ.

The cause of death is currently unknown but the outlet is also reporting that Michael struggled with alcoholism for years.

The former reality star released a statement to Us Weekly, “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."

On Nov. 27, the Grand County Sheriff's Office received a report that there was an abandoned Honda Civic along Interstate 70. Authorities identified Michael as the driver after finding credit card receipts in the car, which led them to a convenience store in Monticello, Utah. The convenience store had security footage of Michael, confirming he was the one driving the vehicle.

According to the Orange County Sheriff’s Department’s arrest record, Michael had been arrested on Nov. 23 for making criminal threats. That was a mere four days prior to his disappearance on Nov. 27. The 30-year-old was released on bail on Nov. 25.

The Deseret News reported that Cavallari's laptop and cellphone were found in the empty car which seemed to have hit a large rock on the side of the road. The car's engine was running and the airbag was deployed.

Earlier in the week, Grand County Sheriff Steven White told FOX411, "Right now everything is pretty status quo. We are conducting follow ups, and there is not much more to add to that. We are still out talking to people trying to piece things together."

The sheriff added, "We're combing the area for anything we can find." White told the paper, "We're deeming it suspicious, but there's nothing to indicate anything one way or another. The vehicle was just abandoned."

On Monday, Kristin, who just gave birth to a daughter, tweeted to thank people for their support during this trying time. She wrote, "I appreciate the thoughts &prayers that have been extended to me & my family. I have such gratitude for those that have shared their support."

What a sad story ...