Attorney General Bill Lockyer filed criminal complaints in Santa Clara County Superior Court naming Ms. Dunn and Mr. Hunsaker, an H-P vice president that directed key parts of the controversial investigation and resigned last week.

Also charged were private investigator Ronald DeLia of Security Outsourcing Solutions Inc., Needham, Mass., and outside investigators Joseph DePante of Melbourne, Fla., and Bryan Wagner of Littleton, Colo. Mr. DePante's firm, Action Research Group, assisted H-P in obtaining the personal phone records of more than 20 people, including H-P directors, employees and journalists.