NEW YORK, June 30 (Xinhua) -- U.S. prosecutors plan to charge at least 10 associates of admitted swindler Bernard Madoff, but it was unclear if those charged would include his wife, sons, or other family members, CBS News reported Monday.

    More than 100 subpoenas have been sent out by U.S. federal prosecutors in the Bernard Madoff case, as criminal investigators turn their focus to at least 10 others likely involved in the largest financial fraud case in Wall Street history, CBS said.

    Everyone close to Madoff's securities firm has reportedly been or is currently "under scrutiny," including family members and business associates, CBS quoted a person familiar with the case assaying.

    In addition to the subpoenas, federal investigators have conducted more than a hundred interviews here and overseas, and reviewed volumes of computer files and microfilm records, said CBS.

    The 71-year-old Madoff began the first day of the rest of his life in prison Tuesday for a crime that a federal judge called "extraordinarily evil."

    Madoff was sentenced in a Manhattan Federal court Monday to 150years in prison after pleading guilty in March to orchestrating a 65-billion-dollar fraud that demolished the life savings of thousands of investors, including charitable organizations.