Matt Lambert, DC doctor, identified as gunman in deadly attack after HOA feud
Dr. Matt Lambert has been identified as the gunman in Thursday's deadly shooting at a Washington, D.C. gym that killed one person and injured four others, according to law enforcement sources.
Authorities confirmed Lambert's identity after the shooting at VIDA gym in D.C.'s Logan Circle neighborhood around 8 a.m. on November 12, 2026. The incident resulted in one fatality and four injuries, with the gunman also being killed during the attack.
According to law enforcement officials and a person familiar with the matter who spoke to The Associated Press on condition of anonymity, Lambert had an apparent dispute with his Homeowner's Association that preceded the violence.
HOA Dispute
The shooter had an ongoing issue with building management at his apartment building and filed a lawsuit against the company last year, the AP reported. Less than 10 minutes before the shooting, Lambert posted on his X account named 'OfMiceandMold,' stating 'My manifesto is an engineering report,' with screenshots of that report.
My manifesto is an engineering report
The photos shared on the platform showed the dispute between Lambert and the Metropole Condominium Association regarding problems like 'mold' and 'water intrusion' issues. In a post from early October, he accused his HOA of using 'months of 'Luigi' tactics' and mentioned submitting 'an independent engineering report.'
Investigation Ongoing
The shooting is still under investigation as authorities work to determine the full extent of Lambert's grievances and whether they directly motivated the attack. Law enforcement officers responded to the active shooter situation near Washington, D.C.'s Logan Circle on November 12, 2026.
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