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Washington doctor Matt Lambert identified as gunman in deadly gym shooting

A gunman who opened fire inside a Washington, D.C. gym on Thursday killed one person and wounded four others before he was also found dead, law enforcement sources said. The shooter has been identified as Dr. Matt Lambert, and investigators are examining a reported dispute with his condominium homeowners' association.

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A gunman who opened fire inside a gym in Washington, D.C., on Thursday killed one person and wounded four others before he was also found dead, according to law enforcement sources. The suspect has been identified as Dr. Matt Lambert, a local doctor whose identity was confirmed by officials and by a source familiar with the case who spoke to the Associated Press on condition of anonymity.

The shooting began around 8 a.m. inside the VIDA gym in the Logan Circle neighborhood. Dispatch audio captured during the response indicated that about 30 people sheltered in the gym's basement while the attack was underway, a detail that describes how many members and staff were inside the building when the gunfire started. Lambert reportedly posted on the social media platform X shortly before the first emergency calls came in, a sequence investigators are now reviewing as part of their inquiry.

Authorities have pointed to an apparent dispute between Lambert and his homeowners' association, the Metropole Condominium Association. Lambert had filed a lawsuit against the building's management last year. In that case, he cited mold and water intrusion in his unit as problems he said had not been adequately addressed. The dispute over those conditions had been playing out in court for months before Thursday's shooting, according to the lawsuit's filing history as reflected in the reporting.

In the posts attributed to him, Lambert referred to an independent engineering report and to "Luigi" tactics, a reference to Luigi Mangione, the man charged in the killing of a UnitedHealthcare executive in New York in 2024. Those posts are part of what has been described as a "manifesto," but the authenticity and meaning of that document are still being examined by investigators. The posts were made public through the same platform where he was active shortly before the attack, and they have become a central focus of the early inquiry.

Officials have not established a full motive for the shooting, and the investigation remains ongoing. Authorities have not yet determined how the posted material relates to the events inside the gym. The victims' names and conditions have not been detailed in the information available so far, and no further charges or additional suspects have been announced. Further information is expected as the inquiry continues, and the Logan Circle neighborhood, a residential area in the District, is likely to remain closely watched while investigators work to establish what led to the attack.

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Audrey Baxter

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Culture Reporter

Audrey Baxter covers public affairs, politics, business, culture and daily news for Boldest Voice. The role focuses on verification, context, and clear explanations for readers.

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