Ordered that the order is affirmed, with costs.
The plaintiff Shannon Riedel was allegedly injured while on property owned by the defendant, and she and her mother thereafter commenced this action to recover damages. Upon review of the record, it is clear that the defendant did not acquire actual knowledge of the essential facts constituting the plaintiffs' claims within 90 days of the accrual thereof or within a reasonable time thereafter (Matter of O'Dowd v. City of New York, 226 A.D.2d 642; Matter of Buddenhagen v. Town of Brookhaven, 212 A.D.2d 605; Matter of Sosa v. City of New York, 206 A.D.2d 374; Matter of Perry v. City of New York, 133 A.D.2d 692, 693). The student incident report and the accident and sickness proof of loss form relied upon by the plaintiffs contained contradictory information as to how and where the accident occurred, and were inadequate to give notice either of the nature and severity of the injuries ultimately claimed, or that the injuries arose from a slippery condition of such a nature that it constituted a trap (see, Matter of Rusiecki v. Clarkstown Cent. School Dist., 227 A.D.2d 493). Accordingly, because the defendant would be substantially prejudiced if required to defend against the plaintiffs' claims, the court did not improvidently exercise its discretion in denying the plaintiffs' motion to serve a late notice of claim (see, Matter of Mondaca v. County of Westchester, 195 A.D.2d 511; Steiger v. Board of Educ., 192 A.D.2d 517; Brown v. New York City Tr. Auth., 172 A.D.2d 178, 180).
O'Brien, J.P., Ritter, Altman and McGinity, JJ., concur.