Although the agency processes hundreds of safety violations each year, it appears that not a single case has ever been referred for criminal investigation, the report said. The inspector general's office estimated 20 percent, or 227 out of 1,126 violations, may have warranted criminal referral. The agency's attorneys told the watchdog that they didn't make criminal referrals because they didn't know the procedures for doing so, and they didn't think it was part of their job.
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