Kristin Cavallari's Boyfriend Mark Estes Allegedly Beaten Students in 2021

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By Eileen Reslen

Mark Estes of the popular TikTok group Montana Boyz was charged with felony assault in February 2021 after allegedly beating up a group of students, Page Six has exclusively learned.

A spokesperson for the Gallatin County Sheriff's Office confirms the influencer — who is now dating “Hills” alum Kristin Cavallari — was involved in the violent incident three years ago, which led to the hospitalization of one of the alleged victims. Estes, 24, was ultimately never charged.

We're told Estes — who was a student at Montana State University at the time — and his friends allegedly got into a fight with another group of students during an off-campus brawl.

However, by the time law enforcement arrived on scene, everyone was “gone and separated”, which is why no immediate arrests were made.

A public information officer for the Gallatin County Sheriff's Office, who worked on the case, told Page Six that police were not informed of the incident until the injured were already in the hospital .

He notes, however, that the group that fought Estes and his friends was only at the hospital for one person, although the entire group apparently went to support their injured friend.

“If we come to this type of thing after the fact, we might not arrest the person even if there is probable cause for them to be charged,” the agent said.

“We will file what's called a request for prosecution with the county attorney's office, and they will issue either a warrant or a summons if they believe there is probable cause to pursue the case.”

The officer handling the case says he filed a request to prosecute Estes specifically because it wasn't a situation in which the then-student athlete was in the wrong place at the wrong time , hinting that the TikTok personality would be one. attackers.

“I asked that Mark Estes be charged with aggravated assault and misdemeanor assault because there were two victims,” the officer said.

“I felt there was probable cause (because) the injuries sustained by one person rose to the level of aggravated assault.” The other person involved had significantly lesser injuries, just minor scratches and bruises, which is more of a misdemeanor charge.

Despite the officer's requests, Page Six has learned that the Gallatin County District Attorney's Office ultimately decided not to file charges against Estes or others involved because they felt it was a matter of a “mutual fight”.

We're told no charges have been filed against the other parties and the injured student's condition was not released because it was “private medical information.”

The public information officer notes, however, that the State of Montana imposed “certain sanctions” given that Estes and the other parties involved were college students at the time.

Michael Becker, a representative for Montana State University, declined Page Six's request to comment on the situation, saying, “Matters regarding the discipline of individual students are protected by federal privacy law.” »

According to online records, it appears Estes transferred schools shortly after the incident. It is unclear, however, whether the incident had anything to do with his move.

He appeared on Montana State's football roster in 2020, but in 2023 he was playing for Montana Tech.

In recent years, Estes has become famous on social media for his lip-syncing videos with friends Kaleb Campbell Winterburn and Kade Wilcox.

The trio has over 800,000 followers on TikTok and nearly 400,000 followers on Instagram.

“The boys started posting on TikTok and went viral within weeks for their good looks and country flair,” a spokesperson for the group recently told us in a press release.

“Former college football stars, these guys are more than just athletes: they're models and cowboys, balancing ranch life with social media fame. They seamlessly blend the wild appeal of cowboy life on the ranch with the refined finesse of fashion, creating a unique character that captivates audiences.

Estes, for his part, became even more famous thanks to his romance with Cavallari.

The social media personality and the 37-year-old “Laguna Beach” alum — who have a 12-year age gap — went public with their relationship in February. They reportedly got “pretty serious” and he met her kids, whom she shares with ex-husband Jay Cutler.

Page Six reached out to a representative for Cavallari for comment on her boyfriend's alleged criminal history, but did not immediately receive a response.

The Gallatin County Sheriff's Office also confirms to Page Six that neither Winterburn nor Wilcox's names appear in February 2021 assault records.

However, Page Six obtained video that shows Winterburn's background isn't entirely clear either.

In the clip, the TikToker appears in the front seat of a car — with Estes next to him in the front passenger seat and another friend having fun in the back of the vehicle.

Winterburn then says on camera while looking at the friend behind him, “Hey, Seth. You’re a…”, causing Estes’ jaw to drop before the video cut off.

Page Six reached out to representatives for the Montana Boyz for comment, but did not immediately receive a response.