{¶ 1} Petitioner-appellant Patrick L. Leonard has taken the instant appeal from the denial of his petition for postconviction relief. He advances on appeal six assignments of error. We hold that Leonard was entitled to a hearing on his claim challenging the trial court’s order that he wear a stun belt during his trial. Accordingly, we reverse in part the judgment of the common pleas court denying his postconviction petition.
{¶ 2} In June 2001, a Hamilton County jury found Leonard guilty of aggravated murder, felonious assault, attempted rape, and kidnapping, in connection with the shooting death of Dawn Flick and the wounding of Ryan Gries and Frank Minges. The trial court imposed for the charge of aggravated murder a sentence of death. Leonard’s direct appeal remains pending before the Ohio Supreme Court.
{¶ 3} On July 30, 2002, Leonard filed with the common pleas court a petition, pursuant to R.C. 2953.21, to vacate or to set aside his convictions. He presented in his petition twelve claims for relief. The common pleas court denied the petition, and this appeal ensued.
I
{¶ 4} Leonard contends in his first assignment of error that the common pleas court’s adoption of the findings of fact and conclusions of law submitted by the state violated his constitutional right to due process of law. In his second assignment of error, he challenges the adequacy of those findings of fact and conclusions of law. These challenges are untenable.
{¶ 5} The common pleas court’s adoption of the findings of facts and conclusions of law submitted by the state did not, by itself, constitute error. See
State v. Calhoun
(1999),
II
{¶ 6} We address together Leonard’s remaining assignments of error. He contends in his third and fourth assignments of error that the common pleas court erred in dismissing his postconviction claims without affording him discovery or the funds to retain experts to aid him in developing his claims. In his fifth assignment of error, he charges that the common pleas court erred in applying the doctrine of res judicata to bar his claims. And in his sixth assignment of error, he challenges the denial of his claims without an evidentiary hearing. We find these challenges to be well taken in part.
{¶ 7} To prevail on a postconviction claim, the petitioner must demonstrate a denial or infringement of his rights in the proceedings resulting in his conviction that rendered the conviction void or voidable under the Ohio Constitution or the United States Constitution. See R.C. 2953.21(A)(1). In advancing such a claim, the petitioner bears the initial burden of demonstrating, through the petition and any supporting affidavits and the files and records of the case, “substantive grounds for relief.” See R.C. 2953.21(C).
{¶ 8} A postconviction claim is subject to dismissal without a hearing if the petitioner has failed to submit with his petition evidentiary material setting forth sufficient operative facts to demonstrate substantive grounds for relief. See id.;
State v. Pankey
(1981),
{¶ 9} We note that the common pleas court denied most of Leonard’s claims for relief, in whole or in part, under the doctrine of res judicata. “Under the doctrine of
res judicata,
a final judgment of conviction bars a convicted defendant who was represented by counsel from raising and litigating in any proceeding!,] except an appeal from that judgment, any defense or any claimed lack of due process that was
raised or could have been raised by the defendant at the trial
[that] resulted in that judgment of conviction[ ] or on an appeal from that judgment.” (Emphasis sic.)
State v. Perry
(1967),
{¶ 10} We further note that Leonard’s third and fourth assignments of error present, in essence, a challenge to the common pleas court’s failure to permit discovery. We have long held that the postconviction statutes do not contemplate discovery in the initial stages of a postconviction proceeding. See
State v. Zuern
(Dec. 4, 1991), 1st Dist. Nos. C-900481 and C-910229,
A. THE PROSECUTION’S MISUSE OF THE SUBPOENA POWER
{¶ 11} In his second claim for relief, Leonard contended that he was denied his constitutional right to a fair trial by the prosecution’s use of subpoenas to compel the attendance of witnesses and to secure the production of documents for “nonjudicial” pretrial proceedings. In support of this claim, Leonard offered evidence of subpoenas that had been served upon a Kentucky law enforcement officer and upon a hospital’s records custodian, ordering them to appear before the court, but directing them to report to the office of the prosecuting attorney. He also offered the affidavit of the mother of two of his children, who attested to her experience in responding to such a subpoena.
{¶ 12} Crim.R. 17 authorizes a court to issue a subpoena only to compel the attendance of a witness or the production of documents at a proceeding over which the trial court has jurisdiction. The rule does not compel a prospective witness to attend, or provide a means for discovery at, a pretrial interview with law enforcement officials.
State v. Campbell
(Jan. 8, 1997), 1st Dist. No. C-950746,
{¶ 13} The evidence offered in support of the second claim showed that the prosecution misused the Crim.R. 17 subpoena power. But Leonard failed to demonstrate how the prosecution’s misconduct in this regard had prejudiced him. *661 We, therefore, hold that the common pleas court properly denied the second claim for relief, because Leonard failed to support the claim with evidentiary material setting forth sufficient operative facts to demonstrate substantive grounds for relief. See R.C. 2953.21(C); Pankey, supra; Jackson, supra
B. THE UNDERREPRESENTATION OF MINORITIES ON THE JURY VENIRE
{¶ 14} In his fourth claim for relief, Leonard contended that the under-representation of African-Americans on his petit jury venire constituted a denial of his rights to due process and equal protection and of his right to a jury consisting of a fair cross section of the community. He supported this claim with United States Census Bureau data for the county and juror questionnaires that had been completed by prospective jurors in his trial and in the trials of three other Hamilton County defendants who had been sentenced to death. This evidence was in existence and was available to the defense at the time of Leonard’s trial. See
State v. Coleman
(Mar. 17, 1993), 1st Dist. No. C-900811,
C. INEFFECTIVE ASSISTANCE OF COUNSEL
{¶ 15} In claims for relief three, five, six, seven, and eight, Leonard contended that he was denied the effective assistance of counsel by his trial counsel’s inadequate and incompetent preparation and presentation of his case during the guilt and penalty phases of his trial. We find no merit to these challenges.
{¶ 16} To prevail on a claim of ineffective assistance of defense counsel, a postconviction petitioner must demonstrate (1) that counsel’s performance fell below an objective standard of reasonableness, and (2) that counsel’s deficient performance prejudiced him. See
Strickland v. Washington
(1984),
1. Ineffective assistance of counsel during the guilt phase of trial
{¶ 17} Leonard contended in his sixth claim for relief that his trial counsel had violated essential duties when they failed to present a speedy-trial challenge,
*662
when they failed to address during the voir dire examination of prospective jurors various matters that had surfaced later at his trial, and when they adduced damaging testimony from defense witnesses at trial. New counsel had represented Leonard in his direct appeal to the Ohio Supreme Court, and these challenges to trial counsel’s competence presented matters that could fairly have been determined without evidence dehors the record. These aspects of the sixth claim were, therefore, subject to dismissal without a hearing under the doctrine of res judicata. See
State v. Cole
(1982),
{¶ 18} In his sixth claim, Leonard also challenged the adequacy of his trial counsel’s cross-examination of certain state’s witnesses, counsel’s failure to present testimony by his sister, and counsel’s failure to challenge the underrepresentation of African-Americans on his petit jury venire. And in his fifth claim, Leonard assailed the adequacy of the investigation conducted by counsel in preparing for the guilt phase of his trial.
{¶ 19} The evidence offered in support of these challenges to counsel’s competence demonstrated neither counsel’s violation of an essential duty to Leonard nor a reasonable probability that, but for the alleged omissions of counsel, either independently or collectively, the results of the guilt phase of his trial would have been different. See Bradley, supra. Leonard thus failed to sustain his initial burden of demonstrating substantive grounds for relief. Accordingly, we hold that the common pleas court properly denied without a hearing the sixth claim and the relevant aspects of his fifth claim. See Pankey, supra; Jackson, supra
2. Ineffective assistance of counsel during the penalty phase of trial
{¶ 20} Leonard directed his seventh claim and the balance of his fifth claim against the adequacy and effectiveness of counsel’s preparation for and presentation of the case in mitigation. The defense presented at trial a mitigation theory that proposed that Leonard was a good person who had acted out of character when he killed Dawn Flick. The evidentiary material offered by Leonard in support of his claims of counsel’s ineffectiveness merely supported an alternative theory of mitigation. When, as here, counsel presented the case in mitigation competently, in view of the facts available to them, evidence offered to prove the existence of mitigation evidence that counsel had failed to present at trial, and that supported an alternative theory of mitigation, did not provide proof of counsel’s ineffectiveness. See
State v. Post
(1987),
*663 3. Ineffective assistance of mental-health expert
{¶ 21} In his eighth claim, Leonard contended that he had been denied the effective assistance of counsel and had been effectively denied his “right” to “a competent mental health examination * * * for purposes of the mitigation [phase of his trial],” because counsel had inadequately prepared and presented the testimony of the psychiatrist retained to examine Leonard, and because the psychiatrist had inadequately evaluated him and had incompetently testified at the mitigation hearing.
{¶ 22} In asserting his “right” to a competent mental-health evaluation, Leonard relied upon the decision of the United States Supreme Court in
Ake v. Oklahoma
(1985),
{¶ 23} The Supreme Court in
Ake
held that due process requires the government to provide an indigent criminal defendant with the funds to obtain expert assistance, upon a showing of benefit and fairness to the defendant. See
State v. Mason
(1998),
{¶ 24} Leonard supported his eighth claim with a report prepared by a licensed clinical psychologist at the behest of the Office of the Ohio Public Defender, highlighting alleged deficiencies in the evaluation conducted and the testimony presented at the mitigation hearing by the psychiatrist retained by the defense. These alleged deficiencies included the psychiatrist’s failure to identify and testify to the dysfunctional nature of Leonard’s social and sexual relationships and his mother’s culpability in his emotional development. The introduction of much of this evidence would only have served to undermine the defense’s mitigation strategy. And, again, proof of the existence of evidence not presented in *664 mitigation that supported an alternative theory of mitigation did not prove counsel’s ineffectiveness, when, as here, the record demonstrated that counsel had presented the case in mitigation competently in view of the facts available to them. See State v. Post, supra. Thus, upon our determination that Leonard failed to demonstrate substantive grounds for relief, we hold that the common pleas court properly denied the eighth claim. See Pankey, supra; Jackson, supra.
Ip. Counsel’s conflicts of interest
{¶ 25} In his third claim for relief, Leonard contended that he was denied his Sixth Amendment right to conflict-free counsel. Specifically, he asserted that his counsel had had close personal ties to the members of his family who had retained and had paid counsel, and that counsel had simultaneously represented him in his criminal trial and him and his brothers’ company in civil actions brought by the victims. These conflicts, Leonard asserted, had hampered counsel’s willingness to uncover and to present at the mitigation hearing evidence concerning his dysfunctional family.
{¶26} The Sixth Amendment guarantees a criminal defendant the effective assistance of counsel and, in doing so, secures him the assistance of counsel free from conflicts of interest. See
Glasser v. United States
(1942),
a
{¶ 27} We note at the outset that the right to conflict-free counsel not only imposes upon defense counsel an affirmative duty to ensure conflict-free representation, but also imposes upon the trial court an affirmative duty to inquire into the matter when the court knows or should know of a potential conflict. See
State v. Gillard
(1992),
b
{¶ 28} A conflict of interest arises when counsel incurs a duty on behalf of one client “to contend for that which [his] duty to another client requires him to oppose.”
State v. Manross
(1988),
{¶ 29} Leonard supported this allegation with copies of the complaints and entries filed in the civil actions. This evidentiary material showed that the victims had predicated their civil claims against the company upon the company’s ownership of the van Leonard had driven to the murder victim’s home, and that the plaintiffs in each action had voluntarily dismissed their claims against the company before trial.
{¶ 30} The dismissal of the company as a defendant in the civil actions left Leonard solely liable on the victims’ claims. In that sense, the evidence might be said to have permitted a conclusion that counsel, in securing the company’s dismissal from the victims’ actions, had incurred a duty adverse to their duties in defending Leonard in the civil action. But the evidence disclosed no duty incurred by counsel in defending the company in the civil action that might be said to have been adverse to or in conflict with counsel’s duties in defending Leonard against the criminal charges. Thus, Leonard failed to show an actual conflict arising from his counsel’s simultaneous representation of him in his murder trial and of the company in the victims’ civil actions.
c
{¶ 31} Leonard also contended that a conflict of interest arose from his counsel’s close personal ties to his family. He asserted that his counsel had possessed “critical information” concerning his family that would have helped to explain his crime. Counsel’s possession of this information, Leonard insisted, necessitated counsel’s testimony at trial and thus required counsel, consistent with DR 5-102(A) of the Ohio Code of Professional Responsibility, to withdraw from representing him at trial.
{¶ 32} A criminal defense counsel’s “breach of an ethical standard does not necessarily make out a denial of the Sixth Amendment guarantee of assistance of counsel.”
Nix v. Whiteside
(1986),
d
{¶ 33} Finally, Leonard contended that his counsel had breached their duty to present an adequate and effective case in mitigation because they had labored under a conflict of interest arising from the fact that his family members had retained and paid them. Courts have recognized the dangers that inhere when a criminal defendant is represented by a lawyer hired and paid by a third party. See
Wood v. Georgia,
{¶ 34} Upon our determination that Leonard failed to demonstrate in any respect a violation of his Sixth Amendment right to conflict-free counsel, we hold that the common pleas court properly denied his third claim for relief without a hearing. See Pankey, supra; Jackson, supra.
D. THE PROSECUTION’S FAILURE TO DISCLOSE EXCULPATORY EVIDENCE
{¶ 35} Leonard contended in his ninth claim for relief that the state had failed to disclose, in response to his discovery requests, exculpatory evidence. In making this claim, Leonard neither specified the undisclosed exculpatory evidence nor supported his claim with evidence dehors the record. He instead cited *667 nondisclosure claims made in other capital cases before the United States District Court for the Southern District of Ohio to show that the nondisclosure of exculpatory evidence by the Office of the Hamilton County Prosecuting Attorney had been “identified [as] an ongoing systemic problem.” This “problem,” Leonard argued, “warranted] the granting of discovery to demonstrate that the chronic problem continued in [his] case.”
{¶ 36} As we noted supra, a postconviction petitioner is not entitled to discovery to develop a claim if the claim and its supporting evidentiary material do not demonstrate substantive grounds for relief. See
State v. Issa,
supra. And a postconviction claim is subject to dismissal without a hearing if the petitioner has failed to support the claim with evidentiary material setting forth sufficient operative facts to demonstrate substantive grounds for relief. See R.C. 2953.21(C);
State v. Pankey,
supra;
State v. Jackson,
supra. In the absence of some demonstration of such grounds, we conclude that the common pleas court properly dismissed Leonard’s ninth claim without a hearing and without permitting discovery on the matter. Accord
State v. Lynch
(Dec. 21, 2001), 1st Dist. No. C-010209,
E. THE CONSTITUTIONALITY OF LETHAL INJECTION
{¶ 37} In his tenth claim for relief, Leonard challenged the constitutionality of the state’s use of lethal injection as a means of execution. The Ohio Supreme Court held in
State v. Carter
(2000),
F. THE CONSTITUTIONALITY OF R.C. 2953.21
{¶ 38} In his eleventh claim for relief, Leonard contended that R.C. 2953.21 violates the Fifth, Sixth, Eighth, Ninth, and Fourteenth Amendments to the United States Constitution. As we noted supra, R.C. 2953.21(A)(1) requires a postconviction petitioner to demonstrate a denial or infringement of his rights
in the proceedings resulting in his conviction that rendered the conviction void or voidable
under the state or federal constitution. The constitutional deprivations asserted by Leonard in his eleventh claim did not occur during the proceedings resulting in his convictions. And a determination that the postconviction statutes were constitutionally infirm would not have rendered his convictions void or voidable. Moreover, we held in
State v. Fautenberry
(Dec. 31, 1998), 1st Dist. No. C-971017,
*668 G. LEONARD’S RESTRAINT BY A STUN BELT
{¶ 39} We turn at last to Leonard’s first claim for relief. In his first claim, Leonard contended that the trial court’s order that he be restrained throughout his trial by an electronic immobilization belt, or “stun belt,” had violated his rights to a fair trial, due process of law, the presumption of innocence, and the effective assistance of counsel. Specifically, he asserted that his restraint by the stun belt in the presence of the jury had stripped him of the physical indicia of innocence, had hampered his ability to assist his counsel, had created a risk that the jury might improperly consider as a sentencing factor his future dangerousness, and had precluded him from proving in mitigation of the death sentence his ability to adjust to incarceration.
{¶ 40} The record discloses that, prior to trial, the defense filed a motion requesting that Leonard be permitted to appear without restraints at all proceedings before the trial court because he had not shown himself to pose a flight or security risk. The trial court essentially denied the motion, declaring that it would accept the recommendation of security made by the Hamilton County Sheriff.
{¶ 41} Leonard supported his postconviction claim with an instruction manual that the Hamilton County Sheriffs Office had issued to its Court Services Division, outlining the purposes and uses of the stun belt, and a notification form that Leonard had signed, advising him of the sheriffs requirement that he wear the belt, the circumstances under which the belt might be activated, and the consequences of its activation.
{¶ 42} Leonard supported his claim with his own affidavit and the affidavits of five siblings who had attended his trial. Leonard asserted that he had had no prior criminal record, and that he had presented neither disciplinary problems while in jail nor security problems during pretrial proceedings. He supported this assertion with copies of the records from his confinement. He further averred that the deputy sheriffs who had wielded the stun belt’s remote control had warned him that they would activate the belt if he said anything that they deemed “verbally aggressive” or if he made what they perceived as a “quick move[ment].” Leonard insisted that these and similar admonitions, coupled with his knowledge of the consequences of the belt’s activation, had distracted him from the proceedings at trial and had made him reluctant to interact with his counsel.
{¶ 43} In their affidavits, Leonard’s siblings attested to their observations that, throughout the trial, two deputy sheriffs had stood close by Leonard’s side, even when, during the penalty phase of the trial, he had taken the stand to make his unsworn statement. Leonard’s siblings asserted, variously, that he or she had *669 noticed the stun belt because the belt had been bulky, because Leonard had been apparently discomfited by it, and because the deputies had constantly hovered about Leonard and had openly exchanged the stun belt’s remote control.
{¶ 44} The Due Process Clause of the Fourteenth Amendment guarantees a criminal defendant a fair trial, an important component of which is the presumption of innocence. See
Coffin v. United States
(1895),
{¶ 45} The decision to use restraints is committed to the sound discretion of the trial court. Id.,
{¶ 46} Neither the United States Supreme Court nor the Ohio Supreme Court has addressed the practice of using a stun belt to restrain a criminal defendant during his trial.
1
Courts that have addressed the issue have recognized that the use of a stun belt raises all of the concerns surrounding the use of traditional in-court restraints and presents some risks of its own. For example, placing a stun belt on a defendant who is all too aware of the possible consequences of the belt’s activation presents “a far more substantial risk of interfering with [his] Sixth Amendment right to confer with counsel than do leg shackles” and may further
*670
affect his right to be present at trial and to participate in his defense by providing “a considerable impediment to [his] ability to follow the proceedings and take an active interest in the presentation of his case.”
United States v. Durham
(C.A.11, 2002),
{¶ 47} The Ohio Supreme Court has declared that “the presence of restraints tends to erode the presumption of innocence that our system attaches to every defendant.”
State v. Franklin,
{¶ 48} The trial court is uniquely situated to determine the risks of violence or escape, upon its consideration of “the [defendant’s] actions both inside and outside the courtroom, as well as his demeanor while court is in session.” Id. For that reason, the decision to impose restraints is committed to the sound discretion of the trial court. See
State v. Richey
(1992),
{¶ 49} The Supreme Court in
State v. Franklin,
supra,
{¶ 50} In the absence of a hearing on the need for restraints, the record of the proceedings at Leonard’s trial manifested no such need. Leonard stood charged with a variety of violent crimes. But the violent nature of the crimes for which Leonard was being tried could not, standing alone, justify the requirement that Leonard wear the stun belt. See
Miller v. State
(Fla.App.2003),
{¶ 51} The evidence submitted by Leonard in support of his postconviction petition showed that he had had no criminal record and that he had displayed no violent tendencies either while in the custody of the sheriffs office or during the proceedings before the trial court that had preceded the denial of his motion to appear before the jury without restraints. As we noted supra, Leonard’s theory of defense and mitigation (which we have, at the state’s urging, found to be at least competent) was that Leonard was not a violent man who had visited his violent nature upon the victims but an essentially peaceful man who had acted out of character on the night in question. The evidence offered by Leonard in support of his petition showed that the stun belt was discernible to spectators in the courtroom and that the stun belt could also have been discernible to the jurors. Leonard argues that the apparent presence of these restraints would have suggested to the jurors that Leonard was not capable of self-restraint.
{¶ 52} Leonard’s petition, with its supporting affidavits and the files and the records of the case, established his entitlement to a hearing on his first postconviction claim. See R.C. 2953.21(E). We, therefore, hold that the common pleas court erred when it dismissed the first claim without a hearing. Accordingly, we sustain the third through sixth assignments of error to the extent that they challenge the dismissal of Leonard’s first postconviction claim without a hearing. And upon our determination that the common pleas court properly dismissed the remaining postconviction claims, we overrule the balance of those assignments of error.
Ill
{¶ 53} Having thus determined that Leonard established an entitlement to an evidentiary hearing on his first claim for relief, we reverse in part the judgment entered below and remand this case for further proceedings consistent with the law and this Decision. In all other respects, we affirm the judgment of the common pleas court.
Judgment accordingly.
Notes
. In
State v. Smith,
1st Dist. No. C-020610,
