Under the common-law doctrine of spoliation, when a party negligently loses or intentionally destroys key evidence, the responsible party may be sanctioned. The party seeking sanctions must show that the party having control over the evidence was obligated to preserve it and that the evidence was destroyed either deliberately or negligently. If the evidence was destroyed negligently, the movant must demonstrate that it was relevant to its claim or defense.
Battle v. Fulton Park Site 4 Houses, Inc., NY Slip Op 00114 (2d Dep't January 14, 2026)