Anthony Deciantis v. State of Rhode Island

Summary

The Rhode Island Supreme Court affirmed the Superior Court’s dismissal of Anthony DeCiantis’s post‑conviction relief application. The Court held that the prosecution did not deliberately withhold exculpatory evidence, that the materiality standard applied was correct, that uncharged crimes of a witness need not be disclosed when not material, and that no prosecutorial misconduct occurred. The decision rests on de novo review of constitutional claims and deference to the hearing justice’s factual findings.