At least five people were shot in a terrifying Washington DC shooting near the White House, leaving one person dead and four others injured. A witness described the horrifying moment, saying a gym member was shot in the neck and died almost instantly. The suspected gunman barricaded himself in a nearby apartment and later suffered a self-inflicted gunshot wound during a standoff with police. Investigators are probing a possible dispute involving the building's homeowners association as a motive.