Determination unanimously confirmed without costs and petition dismissed. Memorandum: The detailed misbehavior report, authored by a correction officer who observed the incident and consigned by another correction officer who also observed the incident, constitutes substantial evidence to support respondent's determination that petitioner violated inmate rule 113.10 ( 7 NYCRR 270.2 [B] [14] [i]), prohibiting the possession of contraband that may be classified as a weapon (see, Matter of Foster v Coughlin, 76 N.Y.2d 964, 966; Matter of Perez v Wilmot, 67 N.Y.2d 615, 616-617). Petitioner's denial of the charge presented an issue of credibility for the Hearing Officer (see, Matter of Foster v Coughlin, supra, at 966; Matter of Perez v Wilmot, supra, at 617).