Author quits Daily Beast after plagiarism claims

(AP) — A Miami Beach-based author of several best-selling books has resigned from his job as chief investigative reporter for the Internet news site The Daily Beast following allegations of plagiarism.

Gerald Posner announced the resignation on his own Web site this week.

Last week, a writer for Slate.com reported that there were several instances in which Posner took material from Miami Herald articles without attribution.

Posner wrote on his Web site that he "inadvertently" copied the passages into master files and that he "lost sight" that the material belonged to a published source.

Posner is the author of "Case Closed," a book about the John F. Kennedy assassination, and more recently, "Miami Babylon," a history of Miami Beach.