Six journalists who were secretly taped by a former spokesman for Attorney General Jerry Brown refused to be interviewed in an independent investigation of the tapings, Alameda County District Attorney Nancy O’Malley told the Express today. O’Malley said that when her office tried to contact the reporters — including longtime San Francisco Chronicle journalist Carla Marinucci — they all referred her to their attorneys. The reporters’ attorneys then cited the state’s shield law for journalists as to why they would not be interviewed.