@dailymail: A veteran doctor and medical tech boss went on a shooting rampage in his apartment building amid a bitter legal battle over water damage in his $1 million home. Dr Matt Lambert, 55, shot dead the building manager in the gym of the tower in Washington DC and wounded three others before turning the gun on himself. Lambert had a long-running feud with Metropole Condominium Association, which operates the luxury residential tower on 15th Street near Logan Circle. He claimed in the lawsuit, and in great detail on his Twitter account, that Metropole caused water damage and resulting mold during facade renovations. Lambert barricaded himself inside the one-bedroom unit, which was built in 2008 and worth just over $1 million, and later shot himself dead. Visit DailyMail.com for more. #news #washingtondc #breakingnews