Appeal from a judgment of the Supreme Court (Lewis, J.), entered August 10, 1989 in Clinton County, which dismissed petitioner’s application, in a proceeding pursuant to CPLR article 78, to review a determination of respondents finding petitioner guilty of violating certain prison disciplinary rules.
On his appeal here, petitioner argues that the Hearing Officer was partial in that he had completed the disposition form before the hearing commenced. This contention is based solely on petitioner’s claim that since the transcript does not state that the tape was turned off at 11:25 a.m., after the completion of the testimony, there was an insufficient interval of time to allow for the preparation of the dispositional report, so that it must have been preprepared. The Hearing Officer vehemently denied petitioner’s contention. Supreme Court found that petitioner’s claim was meritless, concluding that the tape was turned off at 11:25 a.m. at the close of the testimony. The hearing was noted to have been concluded at 11:44 a.m. Supreme Court, therefore, found that petitioner was out of the room for approximately 15 minutes while the dispositional report was being prepared. Petitioner claims that Supreme Court’s conclusion is not supported by the record, but the inferences drawn by Supreme Court are at least as reasonable as those advanced by petitioner. Since petitioner bore the burden of showing bias and that the outcome of the hearing flowed from the alleged bias (see, Matter of Nieves v Coughlin, 157 AD2d 943, 944), the petition was properly dismissed.