In the event, as we suggested, Ing C Olivetti & Co SpA chairman Carlo De Benedetti was allowed to leave jail just before midnight on Tuesday after being interrogated for some six hours, but he is being detained under house arrest while investigators inquiries continue; prison staff said he had accepted the humiliating rituals of being fingerprinted and medically examined with good grace, Reuter reports from Rome, adding that they say he began the interrogation by kissing the hands of the two female magistrates leading the inquiry.