¶1OPINION OF THE COURT
¶2Memorandum.
¶3The judgment of the Appellate Division should be affirmed, without costs.
¶4In 1987, the inmate was convicted of murder in the first *743degree of a Deputy Sheriff and attempted murder in the first degree arising out of an unsuccessful escape attempt earlier that year and was sentenced to a term of 57 Vi years to life. The determination of the Commissioner of State Department of Correctional Services that he should be committed to involuntary protective custody immediately upon his arrival at the facility is supported by substantial evidence. The heinous nature of the crimes of which he was convicted and the inmate’s own admission that he threatened at trial four months earlier to escape again and kill those associated with prosecuting and sentencing him were a part of the record before the Hearing Officer and supplied the legal predicate in this case for the State Commissioner’s determination. Respondent’s interpretation of Department of Correctional Services regulations as authorizing the inmate’s placement in involuntary protective custody in these circumstances was not irrational. The Appellate Division’s judgment confirming the determination of the State Commissioner and dismissing the petition should therefore be affirmed.
¶5The appellant inmate’s claim challenging the 30-day periodic agency review of the continuation of the involuntary protective custody determination, though reached by the Appellate Division in the interest of justice, is not preserved for our review.
¶6Chief Judge Wachtler and Judges Simons, Kaye, Alexander, Titone, Hancock, Jr., and Bellacosa concur.
¶7Judgment affirmed, without costs, in a memorandum.