New details surrounding the deadly Washington, D.C., gym shooting are raising questions about whether a years-long dispute over alleged mold, water damage and costly renovations inside a luxury condominium contributed to the violence.
The suspected gunman has been identified as Dr. Matt Lambert, an emergency physician and medical technology executive who reportedly spent months battling his condominium association over living conditions inside his approximately $1.1 million apartment.
Lambert is accused of opening fire Thursday morning, November 12, at VIDA Fitness in Washington’s Logan Circle neighborhood, killing one person and injuring four others before dying from a self-inflicted gunshot wound inside his seventh-floor apartment.
According to the New York Post, Lambert filed a lawsuit against the Metropole Condominium Association in March 2025, alleging that construction and exterior repairs left his apartment with serious moisture problems and suspected mold contamination.
In the lawsuit, Lambert claimed his residence previously had “no significant water intrusion, mold, moldy smells, moisture accumulation, or related damage,” before the association’s construction project.
However, he alleged that following the work, his apartment “experienced suspected water intrusion, mold, significant moisture accumulation, and/or related damage.”
Lambert reportedly argued that the damage made his home unsuitable for normal living. The Associated Press confirmed that litigation was ongoing at the time of the shooting, with mediation scheduled for March 2027.
Made to order and shipped to your door.
The physician also appeared to publicly document his frustrations through an X account linked to him, posting photographs of construction conditions, alleged water damage, and ongoing renovation work.
Just one day before the shooting, the account shared another complaint about the property’s condition.
“Two years of living in luxury (and the start of 6 months with no shower, dryer, HVAC, and cooking),” the account posted Wednesday, November 11.
The accompanying photographs reportedly showed furniture and other belongings covered in plastic as renovation work continued inside the apartment.
Even more concerning, an account believed to belong to Lambert reportedly posted “My manifesto is an engineering report” approximately an hour before the attack, according to The Times. Authorities have not publicly authenticated the account or established whether the message was connected to the shooting.
Lambert’s professional background included substantial experience in emergency medicine and healthcare technology.
On his personal website, he described himself as “a board-certified emergency physician with over two decades of clinical experience.”
The website also stated, “He has a deep understanding of healthcare regulations and their impact on technology adoption.”
Lambert previously indicated that he divided his time between the “mountains of West Virginia and the Logan Circle neighborhood of Washington, DC.”
Investigators are now attempting to determine whether his ongoing condominium dispute directly motivated Thursday’s attack.
Metropolitan Police Department interim Chief Jeffery Carroll acknowledged that Lambert had experienced a conflict with the building’s homeowners association.
“We do know there was a conflict between him and the homeowners association of that building, but at this point we’re continuing to look into that,” Carroll explained.
Reuters also reported that Lambert complained about the homeowners association while speaking with police negotiators during the barricade situation.
D.C. Councilmember Brooke Pinto suggested the first victim may have been deliberately targeted because of the condominium dispute.
Pinto told NBC News that preliminary information indicated the suspect had targeted someone “that he had been in active litigation with over a condo issue.”
“It’s just so sad and so senseless to kill someone over a dispute that should be worked out reasonably,” she said.
Some news outlets have reported that the man killed was connected to the building’s management. However, police had not publicly confirmed the deceased victim’s identity or established the precise relationship between him and Lambert.
The shooting began shortly before 8 a.m., when approximately 50 people were reportedly exercising inside VIDA Fitness.
Authorities say Lambert shot one person inside the gym before additional gunfire erupted outside, leaving four others wounded. One surviving victim was reported in critical condition.
Afterward, Lambert retreated to his apartment, where police surrounded the building and attempted to negotiate his surrender.
Officers later heard a gunshot, entered the residence, and discovered Lambert dead.
Although investigators have confirmed the longstanding homeowners association conflict, they have not officially determined whether the alleged mold problems, pending lawsuit, or a specific personal grievance motivated the killings.
The investigation remains ongoing.
