WASHINGTON — A prolonged property dispute inside a luxury Logan Circle condominium complex turned deadly on Thursday morning when a 55-year-old physician opened fire inside a ground-floor gym, killing the building manager and wounding four others before shooting himself in his penthouse.
The gunman, identified by law enforcement as Dr. Matt Lambert, stormed the Vida Fitness centre on the ground floor of the Metropole Condominiums and opened fire at close range. He singled out building manager James Stuart, 46, who died at the scene from fatal gunshot wounds. Four other gym patrons sustained bullet wounds as panicking residents scrambled for exits. Lambert then retreated up to his penthouse apartment, barricaded the door, and engaged in an armed standoff with responding tactical units.
He refused to surrender.
Officers breached the apartment hours later to find Lambert dead from a self-inflicted gunshot wound. Police recovered three firearms from the residence.
The shooting erupted during the morning workout rush in the 99-unit residential complex. Patrons on cardio machines scrambled across the floor as rounds shattered the gym's interior.
"There was no way of getting out of the gym other than going past that scene," said one resident who was running on a treadmill when the gunfire started and was forced to evacuate past Stuart's body. "It was like chaos. It was horrific, honestly."
A resident living directly below Lambert's penthouse was barely 20 feet away from the initial burst of fire. While his girlfriend barricaded herself inside their apartment during the ensuing tactical siege, law enforcement surrounded the upper floors. The neighbour later discovered their flat submerged under an inch of water following the emergency firefighting response triggered during the standoff.
There was no way of getting out of the gym other than going past that scene. It was like chaos. It was horrific, honestly.
Condominium Resident
The assault followed years of escalating hostility between Lambert, the Metropole Condominium Association, and property management firm EJF Real Estate Services over chronic water damage and toxic mould.
Court filings show Lambert sued the condominium association, claiming damages exceeding $290,000 as of May. The association and EJF Real Estate Services fought back in court, denying all liability. Defense filings argued that third-party contractors caused any existing structural damage and accused Lambert of failing to mitigate his personal financial losses.
Neighbours reported that Lambert's behaviour had deteriorated rapidly during homeowners' association gatherings. He had previously escorted fellow residents into his penthouse to display water-damaged drywall and fungal growth.
Yet his frustrations spilled heavily into public view online.
Under the social media handle @OfMiceandMold, Lambert maintained a persistent campaign against building management. Shortly before the shooting, he posted an assessment examining water ingress across the complex, declaring: "My manifesto is an engineering report."
On October 1, Lambert invoked the high-profile killing of UnitedHealthcare chief executive Brian Thompson, writing: "After months of 'Luigi' tactics (delay, deny, defend) by the HOA, we were finally able to submit an independent engineering report into the record." He vowed to publish the findings publicly "when the time is right."
Months earlier, on April 28, he published a direct, chilling foreshadowing of Thursday's target: "If you're looking for the building manager, I would check the gym."
| Case Parameter | Verified Detail |
|---|---|
| Incident Location | Vida Fitness, Metropole Condominiums, Logan Circle, Washington D.C. |
| Suspect | Dr. Matt Lambert, 55 (Deceased via self-inflicted gunshot) |
| Deceased Victim | James Stuart, 46 (Metropole Condominium Building Manager) |
| Injured | 4 individuals (Hospitalised with gunshot injuries) |
| Weapons Seized | Three firearms recovered from suspect's penthouse |
| Legal Action Pending | Civil lawsuit claiming in excess of $290,000 in property damages |
District of Columbia property tax records indicate Lambert purchased his Metropole penthouse in September 2016 for $1,095,000.
He was a board-certified emergency medicine physician with more than 20 years of clinical experience. Professional registers show he earned his medical degree from Marshall University in West Virginia and completed his emergency medicine residency at West Virginia University. Outside of hospital rotations, Lambert operated MLEM, a healthcare and medical technology consulting practice, and had previously undertaken humanitarian medical volunteer work across rural clinics in Haiti, Belize, and Kenya.
Metropolitan Police homicide detectives continue to examine ballistics data and Lambert's electronic devices to trace how the recovered firearms were obtained.
Support & Helplines: If you or someone you know is in distress, reach out for immediate assistance. In the United States, call or text 988 to connect with the Suicide & Crisis Lifeline, available 24 hours a day, 7 days a week. In India: Tele-MANAS at 14416 / 1800-891-4416 or KIRAN at 1800-599-0019 (24/7 toll-free).
| Management Entities | Metropole Condominium Association, EJF Real Estate Services |