The Nassau County District Attorney's Office Conviction Integrity Unit (CIU) reviews and thoroughly investigates post-conviction claims of innocence. In general, a Conviction Integrity Unit reexamines past convictions with questions over the defendant’s guilt or innocence. In addition to making sure people are serving prison sentences for crimes they actually committed, these offices also identify areas where improvement is needed to avoid future mistakes. The CIU will only investigate your claim if you meet these criteria; the claim of actual innocence must be predicated on a factual matter, the claimant must proffer new evidence of actual innocence capable of being investigated and potentially substantiated, and case records needed for re-investigation of the claim must exist and be available, the claim must not be frivolous. Lastly, the claimant must agree to cooperate fully with the unit. For more information, contact them directly. Please click here to learn more about what a Conviction Integrity Unit is.