SEOUL, July 29 (Xinhua) -- South Korean prosecutors on Wednesday demanded a six-year jail sentence and a 300 billion-won, or 241 million-U.S. dollar fine for former Samsung Group Chairman Lee Kun-hee, who had been accused of illegal security transactions.

    According to the South Korean prosecution, Lee should be ruled guilty in his charges of forcing Samsung SDS, an affiliate of Samsung Group, to sell bonds with warrants (BWs) to his son and daughters at a far below-market price, as the transaction caused a loss of 154 billion won (123.7 million U.S. dollars) in the firm.

    While a local court and an appellate ruled that Lee was not guilty, the nation's Supreme Court returned the case back to an appellate court, saying the amount of incurred losses was estimated to be far beyond the lower courts' original assessments.

    "Even if the prices of the BWs are calculated differently, the resulting losses well surpass 5 billion won," the prosecution was quoted as saying.

    The ex-chief of the nation's top business conglomerate, however, was acquitted of other charges of illegal wealth and corporate managerial control transfer to his son, Jae-yong, by the Supreme Court in May.

    Prosecutors, meanwhile, demanded four-year prison terms for LeeHak-soo and Kim In-ju, former chief executives of Samsung Group.