Police Say Condo Dispute Linked to Fatal D.C. Gym Shooting

Matt Lambert, a 55-year-old physician, shot and killed condominium building manager James Stuart inside VIDA Fitness in Washington on November 12, then wounded four people from his apartment patio, police said. Lambert later died from a self-inflicted gunshot wound after barricading himself in the apartment and speaking with negotiators for about an hour, authorities said.

The shooting began shortly before 8 a.m. at the gym in the 1500 block of 15th Street Northwest. Police said Lambert shot Stuart, 46, inside the gym before returning to his seventh-floor apartment and firing at people below. The sequence unfolded in less than five minutes, Interim Police Chief Jeffery Carroll said.

The four people wounded, two men and two women, were taken to hospitals. One was in critical condition and the other three had injuries police described as non-life-threatening. Authorities have not said whether the wounded people knew Lambert.

Police said Lambert barricaded himself in the apartment and fired through the door twice while officers were outside. During the standoff, he started a fire and broke a natural-gas line, according to police. Sprinklers helped contain the flames. After...