The Guardian reports on a fatal shooting at a Washington DC condominium building: police say Matt Lambert, a 55-year-old doctor in a legal dispute over water damage and mold in his apartment, killed building manager James Stuart in the gym and fired at four people from his balcony before being found dead of a self-inflicted gunshot. Building manager Charelle Ferguson said Lambert confessed by phone about an hour after the shooting began, telling her the only way people pay attention is to do something, and his civil attorney Joel Braithwaite said he was deeply shocked.