On July 17, 1988, Correction Officer Belisle filed a disciplinary report charging the plaintiff with violating departmental or institutional rules, see 103 Code Mass. Regs. § 430.24(2) (1987), and with conduct disrupting the orderly running of a correctional institution, 103 Code Mass. *123 Regs. § 430.24(8) (1987). The report described the offense as follows:
“On 7-17-88 at aprox 6:20 p.m., while I was standing at the end of the upper right tier, I did notice inmate Mc-Lellan passing the phone to Jack Shea. This inmate is well aware that he is not to pass the phone on his allotted phone time. Inmate Jack Shea is on isolation status and is not to have the phone.”
Belisle’s report was signed by the disciplinary officer and by the shift commander, as well as by Belisle. The disciplinary officer is appointed by the superintendent of M.C.I., Cedar Junction, to review disciplinary reports, to determine whether to proceed on disciplinary charges, and to designate the offense as a major or minor matter. 103 Code Mass. Regs. §§ 430.07 & 430.09 (1987).
Designated as “major,” the matter went to a hearing. The disciplinary board found the plaintiff guilty on the basis of the report, “given inmate refused to attend hearing,” and imposed a sanction consisting of a two-week loss of telephone privileges. After an unsuccessful appeal to the superintendent, the plaintiff brought this action in the nature of certio-rari. 2 The parties filed cross motions for summary judgment; only the defendants’ was allowed.
In this appeal from the ensuing judgment, the plaintiff makes the following contentions: (1) because the board gave inadequate reasons for its findings and because the evidence relied upon was only the officer’s disciplinary report and the plaintiff’s silence, the board’s decision was in violation of both the department’s regulations and the requirements of due process set forth in
Wolff
v.
McDonnell,
1.
Adequacy of reasons and evidence.
We'first consider whether there was a violation of local law in the form of the regulations. See
Wightman
v.
Superintendent, M.C.I., Walpole,
The departmental regulations, the relevant portions of which are summarized in the margin,
4
and other authorities
*125
do not bear out these claims. To the contrary, they support our conclusion that the statement of evidence relied upon was sufficient and reflects “the thinking processes that led the prison board to believe the inmate committed the charged offense and to determine that a particular sanction was appropriate.”
Stokes
v.
Commissioner of Correction,
The plaintiff in this case did not request the presence of the staffperson or any other witnesses, see note 4,
supra,
and refused to attend the hearing. We, therefore, turn to the disciplinary report itself and compare it with the document found inadequate in
Wightman
v.
Superintendent, M.C.I., Walpole,
The plaintiff also raises due process considerations relying on
Wolff
v.
McDonnell,
While we consider it unlikely that the onetime use of the word “may” in the
Hill
opinion, in view of other language in
Hill,
see 453-454, indicates that the potential loss of such credits impairs a liberty interest and hence triggers the due process rights of
Wolff,
see also
Baxter
v.
Palmigiano,
In
Stokes,
As in
Stokes,
2. Officer’s notation. Officer Belisle, apparently, had second thoughts about the incident. According to an affidavit filed by the plaintiff in support of his cross-motion for summary judgment, the writing on the plaintiff’s appeal form to the superintendent was Belisle’s and stated: “It’s my opinion this ticket should be void. I did try to stop this ticket before.”
The plaintiff’s contention that Belisle’s notation should have resulted in a dismissal of the board’s decision does not recognize that, once a disciplinary report has been filed, the decision to proceed rests not with the reporting officer, but with the disciplinary officer. 103 Code Mass. Regs. § 430.09(1) (1987).
There are many reasons, moreover, why an officer may have a change of heart or mind other than the truth of the allegations. While Belisle may -have had discretion whether to issue a disciplinary report, he had no discretion under the regulations to prevent prosecution of the charges once they had been initiated. His unexplained notation on the appeal form, entered after a finding of guilty by the disciplinary board, is not a sufficient ground for requiring prison officials to follow Belisle’s revised opinion or to reverse the board’s finding or the denial of the appeal by the superintendent.
The remaining contention of the plaintiff that the department did not allow him to use the telephone to call attorneys or the courts during the period of the sanction is not sup- *129 . ported by the record and, moreover, has no relevance to this appeal.
Judgment affirmed.
Notes
The plaintiff also sought to bring this action under G. L. c. 231 A. This was inappropriate. See McLellan v. Commissioner of Correction, post 933, 934 (1990), and cases cited.
The plaintiffs complaint stated that he refused to attend the hearing because there is no rule or regulation prohibiting “passing the phone.” He wisely refrains from making this argument on appeal in view of 103 Code Mass. Regs. § 482.09(1) (1986), which prohibits inmates in disciplinary isolation from having access to a telephone, except to call courts and attorneys, without authorization of the superintendent. McLellan’s providing telephone access to an inmate in isolation can readily be considered to interfere with the orderly running of the institution (§ 430.24[8]), an offense listed in Belisle’s disciplinary report.
The departmental regulations require that: “The evidence relied upon for the guilty finding and the reasons for the sanction .... be set out in specific terms.” 103 Code Mass. Regs. § 430.17(2) (1987). The proponent of the disciplinary report has the burden of proving the offense by a preponderance of evidence. § 430.16(1)(1987). The board is not bound by the rules of evidence (§430.13[3] [1987]) but is to make its findings based on “substantial evidence.” § 430.16(1). If the inmate wishes to have the reporting staffperson present, he is to file a form (§430.11 [4] [1987]) and such staffperson, when requested by the inmate or the disciplinary board, shall attend the hearing unless a determination of unavailability has been made. §430.14(5)(1987). The inmate may call witnesses and present other *125 evidence in his defense when permitting him to do so will not be unduly hazardous to personal safety or institutional security. §430.14(4) (1987). He may, but is not required to, make oral or written statements in his defense; however, an inmate’s silence may be used to draw an adverse inference against him. §430.14(3)(1987). Such silence cannot be the sole basis for a guilty finding. Ibid.
The requirements of
Wolff
as set forth in
Superintendent, M.C.I., Walpole
v.
Hill,
The department’s regulations distinguish between major and minor matters, see 103 Code Mass. Regs. §§ 430.09(3), 430.11(1) (1987), and also between major and minor sanctions. 103 Code Mass. Regs. § 430.25 (1987). Although major “sanctions” are not expressly linked to major “matters,” the connection is implicit.
The plaintiff also argues that, because he was housed in the departmental segregation unit, the report had the potential of prolonging his confinement in segregation and therefore entitled him to the due process rights set forth in
Wolff.
Subsequent to the filing of his complaint, the plaintiff was released on parole. The claim is therefore moot. We treat, without so deciding, his other claims as still viable. He may have a personal stake in their outcome if findings of guilty on disciplinary reports have serious collateral consequences. See
Blake
v.
Massachusetts Parole Bd.,
McKinnon
v.
Patterson,
Federal law also permits an adverse inference to be drawn from an inmate’s silence.
Baxter
v.
Palmigiano,
