The ɠυɳɱαɳ in the Washington, DC, gym śh́óóting is a wealthy doctor who had been locked in a battle over black mold in his $1.1 million penthouse — and cited a report about it as his chilling “manifesto.”
Dr. Matt Lambert, an emergency room doctor, had sued his homeowners association in March 2025, claiming that scaffolding from repairs on his trendy Logan Circle building led the dangerous fungus to spread.
“My manifesto is an engineering report,” an X account linked to Lambert tweeted at 8 a.m. Thursday— minutes before he opened fire inside his building’s ground-floor gym, 𝘬iᩚlling at least one person.
He attached a report that cited “suspected microbial growth,” along with water intrusion and a hefty bill to “rehabilitate” the wall of his swank home.
“Two years of living in luxury (and the start of 6 months with no shower, dryer, HVAC, and cooking),” he posted Wednesday, along with pictures of renovations in the unit.
Lambert allegedly killed one person and left four others injured in Vida gym, where he is believed to have been a member, according to police.
He then ran back up to his penthouse and barricaded himself before taking his own life, police said.
Lambert lived on the seventh floor of 1515 15th St. NW, dubbed “one of DC’s most desired buildings” with “chic, open living spaces” by the real estate firm Redfin.
DC police said they were investigating a conflict with the homeowner’s association as the reason behind the śh́óóting.
Lambert — who had been fighting with the Metropole Condominium Association over mold problem since August 2024 —developed an apparent obsession with alleged “leaks, mold and rodent infestation” in the building, ranting about it dozens of times on X in recent months.
“It’s a good night to have an uninhabitable penthouse,” he tweeted sarcastically in July.
“Discontinuous Tyvek should be the name of a punk band- not something listed in the conclusions of a building envelope report,” he fumed last month.
Lambert filed his suit in March 2025, alleging that his home experienced “no significant water intrusion, mold, moldy smells, moisture accumulation, or related damage,” prior to the remediation efforts overseen by the association.
But, after the building was enveloped, his unit “experienced suspected water intrusion, mold, significant moisture accumulation, and/or related damage,” the suit said.
“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,” Interim Chief of Police for the Metropolitan Police Department Jeffery Carroll said at a press conference Thursday.
Ward 2 Council Member Brooke Pinto, who represents and lives in the area, said preliminary information suggests the šhσσtєr was targeting someone in Vida Fitness and “that he had been in active litigation with over a condo issue.”
“It’s just so sad and so senseless to 𝘬iᩚll someone over a dispute that should be worked out reasonably,” she told NBC News.
The homeowners association didn’t immediately return a request for comment from The Post Thursday.
