DC Doctor and Tech Executive Kills Building Manager in Shooting Rampage

WASHINGTON, Nov 12 (OPA) — Washington, DC, police identified the gunman as 55-year-old Dr. Matt Lambert, who launched the deadly attack inside the Metropole luxury residential tower near Logan Circle. Metropolitan Police Chief Jeffery Carroll stated that officers responded to the complex after a male victim was shot in the back inside the VIDA Fitness gym. Negotiators maintained contact with Lambert during a one-hour standoff before forcing entry into his apartment, where they recovered three firearms and found the suspect dead.

Investigators confirmed that Lambert was engaged in a bitter, long-running legal dispute with the Metropole Condominium Association regarding extensive water damage and mold in his $1 million home. Court filings show Lambert sued the association in March 2025, claiming that facade renovations initiated in March 2023 caused severe moisture accumulation and structural damage to his unit. Chief Carroll noted that authorities are actively investigating the conflict between the shooter and the homeowners association as the primary motive for the rampage.

Prior to the shooting, Lambert posted a series of grievances on social media, detailing months of uninhabitable conditions inside his apartment, including broken utilities and unchecked mold growth. His final online post, published at 8:06 a.m. while he was holed up inside the building, declared that his manifesto was an engineering report and included screenshots of assessments supporting his claims about the property. He had also sent formal requests for repairs and financial reimbursement, which he claimed the association repeatedly ignored.

Professionally, Lambert served as the chief medical officer and head of product strategy at Advantmed, a healthcare information management company, having previously held roles with New York City Health and Hospitals. Police reported that at least one of the wounded victims remains in critical condition, while three others sustained non-life-threatening injuries. The ongoing investigation involves local authorities and federal partners examining the precise timeline of the dispute and the accumulation of weapons inside the residential unit.