DC ɠυɳɱαɳ made eerie comment about victim’s routine before śh́óóting — and invoked slogan inscribed on Luigi Mangione’s bullets

The deranged Washington, DC, doctor who ɠυɳned down his building manager Thursday over his moldy $1.1 million penthouse chillingly knew the victim’s morning routine — and name-dropped Luigi Mangione.

Dr. Matt Lambert, Chief Medical Officer and Head of Product Strategy at Advantmed.

Dr. Matt Lambert is the Chief Medical Officer and Head of Product Strategy at Advantmed on, March 16, 2019. Business Wire

James Stuart holding a cup of coffee in front of Halloween decorations.

Matt Lambert fatally shot building manager James Stuart (pictured), gym over a mold dispute. Facebook/James Stuart

In an interview with a then-Washington Post reporter, Matt Lambert railed about the building manager-turned-slay victim James Stuart, saying the fight over the mold that turned his 7th-floor home into a hell hole had turned into “psychological warfare,” The Washington Sun reported Thursday.

He also eerily noted to a fellow resident who had also been waiting for repairs to be done to his apartment: “If you want to see the building manager he comes in the gym about 8 o’clock.”

James Stuart wearing a Santa hat in front of a decorated Christmas tree.

Stuart was killed inside the Metropole Condominiums gym in Washington, D.C., on Nov. 12, 2026. Facebook/James Stuart

James Stuart takes a mirror selfie in a gym.

Lambert used a handgun to 𝘬iᩚll Stuart just after 8 a.m. inside the building’s ground-floor gym. Facebook/James Stuart

Lambert used a handgun to 𝘬iᩚll Stuart just after 8 a.m. inside the building’s ground-floor gym in the ritzy Logan Square neighborhood.

The ᑕrαzєd 𝘬iᩚller also referenced Mangione, the UnitedHealthcare CEO 𝘬iᩚller, in conversations with the journalist, Michael Brice-Saddler, who penned a piece about his encounter with the now-dead ER doctor for The Washington Sun.

Last December, Brice-Saddler recalled Lambert mentioning the three words inscribed on Mangione’s bullets he used to 𝘬iᩚll Brian Thompson.

“What are they called? Delay, deny, defend … the Luigi three?” Lambert said at the time.

A living room with furniture and belongings covered in plastic sheeting.

A picture of Dr. Matt Lambert’s home as it apparently suffered mold. X/miceandmold

A brick building undergoing leak testing, with a hose spraying water against a glass and metal facade.

Dr. Matt Lambert holds his book “Unrest Insured” in an undated photo. X/MattLambertMD

The DC ɠυɳɱαɳ also mentioned Mangione on X, as he ripped management for dragging its feet on repairing the Logan Circle building.


Here’s the latest on the diᩚadℓy śh́óóting at a Washington, DC gym:

  • Victim in DC śh́óóting ID’d as building manager that Matt Lambert had a beef with over moldy $1.1M penthouse
  • Inside intense hour-long standoff between DC šhσσtєr Matt Lambert and cops before 𝘬iᩚlling himself in mold-ridden penthouse
  • DC gym šhσσtєr ID’d as Dr. Matt Lambert — who went berserk at HOA over black mold in his $1.1M apartment
  • Matt Lambert posted twisted ‘manifesto’ just minutes before diᩚadℓy DC śh́óóting in trendy Logan Circle
  • śh́óóting suspect besieged by cops turns gun on himself after 𝘬iᩚlling 1, injuring 4 in trendy DC neighborhood

“After months of ‘Luigi’ tactics (delay, deny, defend) by the HOA, we were finally able to submit an independent engineering report into the record,” Lambert wrote on Oct. 1.

A bullet hole in a window of a building.

A bullet hole marks a surface following reports of an active śh́óóting on Nov. 12, 2026, in Washington. AP Photo/Julia Demaree Nikhinson

A building exterior undergoing window leak testing, with water spraying against the glass from a hose connected to a vertical apparatus.

A photo outside the luxury apartment building where Dr. Matt Lambert lived. X/miceandmold

“The report addresses 704, the facade rehabilitation more broadly , and lists other units affected. When the time is right, I will share the report on X, with other Metropole owners, and with Logan Circle realtors.”

He also shot and injured four others from the balcony of his apartment.

Emergency response team on a building's roof deck in Logan Circle.

An emergency response team stands on a roof deck of a building in Logan Circle in Washington, DC on Nov. 12, 2026, after a diᩚadℓy śh́óóting. Getty Images

Emergency personnel work at the site of a shooting in Washington, DC, surrounded by police cars and fire trucks with flashing lights.

Emergency personnel work at the site of a śh́óóting in Washington on Nov. 12, 2026. REUTERS

Lambert killed himself in the mold-ridden penthouse following an hour-long standoff with cops.

This is a developing story. Please check back for updates.

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