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Colorado Man Files Lawsuit Against MGM Grand Over Alleged Security Assault and Injuries

By jili tutorial · October 8, 2026

Colorado Man Files Lawsuit Against MGM Grand Over Alleged Security Assault and Injuries

Incident Overview: A Restroom Encounter Escalates into Serious Injuries

Denis Matthew Lanctot, a Colorado resident, has filed a federal lawsuit against MGM Grand Las Vegas, alleging that security officers brutally assaulted him in his hotel room, resulting in severe injuries, including a mild traumatic brain injury (mTBI). The incident, which occurred on July 5, 2024, began with an encounter involving Lanctot’s girlfriend, Tiffany Goldman, in a women’s restroom at the Las Vegas Strip resort.

According to Lanctot’s legal complaint, security officers entered the restroom while Goldman was inside, causing her to scream. Concerned for her safety, Lanctot entered the restroom to check on her, only to be ordered out by security personnel. Following this, Lanctot and Goldman were escorted to their hotel room to gather their belongings and leave the property.

The Alleged Assault: A Violent Confrontation in the Hotel Room

Lanctot claims that while inside the guest room, multiple security officers suddenly rushed him without warning, tackling him to the floor. He alleges that this unprovoked attack left him with extensive physical injuries, including a fractured arm, a dislocated shoulder, and a mild traumatic brain injury. Lanctot’s legal team has stated that the incident resulted in over $166,000 in medical expenses.

Medical Consequences: Severe Injuries and Ongoing Treatment

Lanctot was transported by ambulance to Sunrise Hospital and Medical Center, where physicians diagnosed him with a dislocated left shoulder and a humeral shaft fracture. His injuries required a shoulder reduction procedure performed under sedation. Subsequent medical evaluations revealed additional complications, including a Bankart lesion, a Hill-Sachs deformity, and post-concussion syndrome resulting from the mTBI.

Financial Burden: Calculating the Costs of Recovery

In a motion filed on September 3, Lanctot’s attorneys outlined the financial impact of his injuries, estimating past and future medical expenses at $166,815.50. This figure includes over $69,000 in accrued treatment costs and projected expenses for future therapeutic injections and corrective surgeries. Lanctot is seeking compensatory and punitive damages, lost wages, and legal costs in his lawsuit against MGM Grand Hotel, LLC.

Lanctot’s lawsuit accuses MGM Grand of negligence, negligent hiring, supervision, and retention of security staff. Additionally, he has filed counts of assault and battery against unnamed security personnel. MGM Grand has denied all allegations of wrongdoing in its court filings, setting the stage for a contentious legal battle.

Jurisdictional Dispute: Federal vs. State Court

MGM Grand attempted to transfer the lawsuit from Nevada state court to the U.S. District Court for the District of Nevada on October 2, citing diversity jurisdiction based on state citizenship and the monetary amount in controversy. However, U.S. Magistrate Judge Nancy J. Koppe questioned this procedural move on October 6, ordering both parties to discuss potentially remanding the case back to state court. If no agreement is reached, MGM must file an amended jurisdictional disclosure statement by October 13.

Contextualizing the Case: Security Practices in Hospitality

This case raises important questions about the role and conduct of security personnel in large hospitality venues like MGM Grand. Security teams are tasked with maintaining guest safety, but incidents like this highlight the potential for overreach and misconduct. Lanctot’s allegations of unprovoked violence could prompt a reevaluation of hiring, training, and supervision practices within the security industry.

Denis Matthew Lanctot’s lawsuit against MGM Grand is not just a personal legal battle; it also underscores the need for accountability and reform in the security practices of major hospitality establishments. As the case progresses, its outcome could set precedents for how such incidents are handled in the future.