HUNSTEIN, Justice.

We granted the State's petition for a writ of certiorari in this criminal case to determine whether the Court of Appeals properly affirmed the superior court's order dismissing a particular count of the indictment and suppressing statements made by the defendant, Appellee John James Lampl, before a special purpose grand jury. While we agree with the superior court's conclusion that the special purpose grand jury exceeded the scope of its authority in its investigation, we hold that the relief granted was improper. We therefore reverse.

In March 2011, the Chief Judge of the Clayton Judicial Circuit, at the request of the Clayton County District Attorney, issued an order pursuant to OCGA § 15-12-100 authorizing the impaneling of a special purpose grand jury to investigate certain alleged public corruption. The special purpose grand jury issued subpoenas to various witnesses, including Lampl, who testified before it in June 2011. In July 2011, the special purpose grand jury returned a 16-count bill of indictment against Lampl on charges of conspiracy in restraint of free and open competition, false statements and writings, and perjury. The indictment was subsequently nolle prossed in the aftermath of the Court of Appeals' holding in Kenerly v. State, 311 Ga.App. 190, 715 S.E.2d 688 (2011), that the authority of a special purpose grand jury is limited to conducting investigations and does not include the power to issue indictments.

Shortly thereafter, in September 2011, Lampl was indicted by a regular Clayton County grand jury on eight counts, including one perjury count, similar to those charged in the special purpose grand jury's initial indictment. The conspiracy and false statements counts all pertain to alleged conduct by Lampl, in his capacity as City Manager for the City of Morrow, in connection with a City real estate development project known as "Olde Towne Morrow." The perjury count is based on an alleged false statement Lampl made in the course of his testimony before the special purpose grand jury.1

Through counsel, Lampl filed a bevy of pretrial motions, including (1) a Motion to Quash Count VIII (the perjury count) and (2) a joint Motion to Dismiss Count VIII and Motion to Suppress Defendant's Alleged Statements Made to Grand Jury. Lampl also moved to compel the production of the special purpose grand jury's impaneling order, which had been filed under seal. The trial court subsequently ordered that the impaneling order be unsealed and a redacted version of the order, omitting the names of the particular individuals identified as subjects of the investigation, be released to the parties.

The impaneling order calls for the formation of "a special purpose grand jury for the purpose of investigating public corruption and various crimes allegedly committed by currently or previously elected county officials and county employees." It is undisputed that, during the time period under investigation, Lampl was an official with and employee of the City of Morrow, not Clayton County, and that Olde Towne Morrow was a project undertaken by the City, not the County. It is also undisputed that Lampl's name was not among those specifically referenced in the impaneling order as subjects of the investigation.2

Contending that the impaneling order did not authorize the special purpose grand jury to investigate alleged corruption by City officials, Lampl then filed a Plea in Bar and Motion to Dismiss with Prejudice, seeking dismissal of either the entire indictment or, in the alternative, Count VIII. In the motion, Lampl asserted that the special purpose grand jury had exceeded its authority in investigating Old Towne Morrow, a non-County project, and unlawfully targeted Lampl, a non-County employee. Lampl argued further that the Clayton County District Attorney, by knowingly employing the special purpose grand jury to investigate matters outside the scope of the impaneling order, had committed a "gross abuse of the Grand Jury system," which justified dismissal of the entire indictment as a sanction. Short of dismissal of the entire indictment, Lampl urged the superior court to dismiss the perjury count because it was based upon a statement made before a grand jury that was unlawfully convened and which, thus, lacked authority to issue an oath.

Following a hearing on this and certain of the other pretrial motions, the superior court agreed with Lampl that the special purpose grand jury had exceeded its authority and granted his requested relief in part. Relying on the reasoning of Kenerly v. State, supra, the court held that the authority of a special purpose grand jury "is limited to the purpose stated when it is impaneled by the Chief Judge of the Superior Court" and that, here, the plain language of the impaneling order authorized the investigation of public corruption only involving county officials and employees. The court thus concluded that the special purpose grand jury had exceeded its authority in investigating the Olde Towne Morrow project and in compelling Lampl's testimony before it. Consequently, the court quashed and dismissed the perjury count and suppressed from evidence Lampl's testimony before the special purpose grand jury and all evidence derived therefrom. Finding that the indictment was returned by a properly constituted grand jury, however, the court declined to dismiss the remainder of the indictment.

On cross-appeals by both sides, the Court of Appeals affirmed, agreeing that the special purpose grand jury had exceeded its authority in investigating Olde Towne Morrow and subpoenaing Lampl and that the perjury count was thus properly dismissed. State v. Lampl, 325 Ga.App. 344(1), 750 S.E.2d 685 (2013). Regarding the superior court's refusal to dismiss the remainder of the indictment, the appellate court concluded that even

Id. at 348, 750 S.E.2d 685. Both sides thereafter filed petitions for certiorari in this Court. We granted the State's petition for writ of certiorari to determine whether the Court of Appeals erred in concluding that the superior court properly dismissed the perjury count and properly ordered the suppression of Lampl's testimony before the special purpose grand jury.3

1. We agree with the courts below that the special purpose grand jury exceeded its authority in investigating the Olde Towne Morrow project and Lampl's involvement in it without any effort to connect that project or Lampl to potential crimes by county officials or employees. OCGA § 15-12-100(a) authorizes the impaneling of a special purpose grand jury "for the purpose of investigating any alleged violation of the laws of this state or any other matter subject to investigation by grand juries as provided by law." Once impaneled and constituted in accordance with the statute, a special purpose grand jury is empowered to compel evidence, subpoena witnesses, and inspect public documents "which relate directly or indirectly to the subject of the investigation." Id. at (c). Unless otherwise specified in the statute, the duties of a special purpose grand jury "shall be confined to such matters and things as it is required to perform by the Constitution and laws or by order of any superior court judge." (Emphasis added.) OCGA § 15-12-71(a) (delineating duties of grand juries generally); see also OCGA § 15-12-102 (except as otherwise provided, law relative to grand juries generally applies to special purpose grand juries). From the foregoing authorities, it follows that a special purpose grand jury has the power to compel testimony and other evidence only insofar as it relates "directly or indirectly to the subject of the investigation" as set forth in the order authorizing its impaneling.

Here, the impaneling order on its face authorizes the investigation of public corruption and crimes allegedly committed by current or former "county officials and county employees." There is no dispute that Lampl is neither a current nor former county official or employee and that Olde Towne Morrow is not a county project. As the superior court and Court of Appeals both concluded, we, too, hold that the special purpose grand jury lacked the authority to investigate Olde Towne Morrow or Lampl's conduct with regard to that project independent of any connection to potential criminal conduct by county officials or employees.

2. Having determined that the Olde Towne Morrow project and Lampl's involvement therein were not proper subjects of the special purpose grand jury's investigation, we must now consider the propriety of the relief granted by the superior court. We conclude that the superior court erred in dismissing the perjury count and in suppressing Lampl's grand jury testimony as sanctions for the special purpose grand jury's overreach, because the conduct of the special purpose grand jury, though improper, did not constitute a violation of Lampl's constitutional rights or otherwise rise to the level necessary to justify these sanctions.

Dismissal of an indictment and suppression of evidence are extreme sanctions, used only sparingly as remedies for unlawful government conduct. See Wilcox v. State, 250 Ga. 745(4), 301 S.E.2d 251 (1983) (remedy for government misconduct should be tailored to injury suffered and thus dismissal of indictment is generally disfavored); Robinson v. State, 200 Ga.App. 515, 517(1), 408 S.E.2d 820 (1991) ("`dismissal is an extreme sanction which should be infrequently utilized'"); see also Tew v. State, 246 Ga.App. 270, 271(1), 539 S.E.2d 579 (2000) (physical precedent only) ("[t]he exclusion of evidence is an extreme sanction and one not favored in the law"). Unless expressly authorized by statute, such sanctions generally "cannot be imposed absent a violation of a constitutional right," Lopez v. State, 274 Ga. 663, 665(2), 558 S.E.2d 698 (2002); accord Villegas v. State, 273 Ga. 824(6), 546 S.E.2d 504 (2001); Tew, 246 Ga.App. at 272-273, 539 S.E.2d 579, or in the rare case in which the State's action has compromised "`the structural protections of the grand jury [and thus] render[ed] the proceedings fundamentally unfair.'" Colon v. State, 275 Ga.App. 73, 78(3), 619 S.E.2d 773 (2005) (quoting Bank of Nova Scotia v. United States, 487 U.S. 250, 108 S.Ct. 2369, 101 L.Ed.2d 228 (1988)). See, e.g., State v. Brown, 293 Ga. 493, 748 S.E.2d 376 (2013) (dismissal was warranted where indictment was returned in a forum other than "open court"); Colon, 275 Ga.App. at 78, 619 S.E.2d 773 (dismissal would be warranted where the prosecutor remains present during the grand jury's deliberations). While in rare instances the exclusionary rule has been applied as a remedy for the violation of a statute, this generally holds only if the statutory violation implicates underlying constitutional interests. See Sanchez-Llamas v. Oregon, 548 U.S. 331, 348, 126 S.Ct. 2669, 165 L.Ed.2d 557 (2006) (suppression has been approved as a remedy for statutory violations only where violation "implicated important Fourth and Fifth Amendment interests").

As we held in Division 1, Lampl has established a violation of the impaneling order, which fixed the scope of the special purpose grand jury's investigative powers. Such a violation, by definition, also constitutes a violation of the statutory provisions delimiting the scope of a grand jury's duties. See OCGA §§ 15-12-71(a), 15-12-102. However, the grand jury statutes nowhere authorize either dismissal of an indictment or suppression of evidence as a remedy for a grand jury's overreach. Moreover, Lampl has established neither a violation of his constitutional rights nor a structural defect in the grand jury process. While Lampl attempts to elevate the overbreadth of the investigation into the constitutional realm by characterizing it as a due process violation, we do not agree with this characterization.

Lampl first contends that the prosecutor purposefully misused the special purpose grand jury to investigate matters she knew were outside the scope of the impaneling order, thereby violating his due process rights.4 Even if such egregious ill intent were borne out in the record, we discern no due process violation. As the trial court found, Lampl's current indictment was returned not by the allegedly manipulated special purpose grand jury but rather by an independent, properly constituted regular grand jury. Even if, as Lampl contends, some of the evidence presented to the regular grand jury emanated from the unlawful investigation by the special purpose grand jury, this in itself is of no moment, for grand juries, unlike petit juries, are authorized to consider evidence without regard to its eventual admissibility at trial. See Mitchell v. State, 239 Ga. 456, 459(3), 238 S.E.2d 100 (1977) ("`[t]he evidence which the grand jury receives in finding a true bill is not subject to inquiry'"); accord Anderson v. State, 258 Ga. 70(11), 365 S.E.2d 421 (1988); see also United States v. Calandra, 414 U.S. 338, 343(II), 94 S.Ct. 613, 38 L.Ed.2d 561 (1974) (grand jury's "operation generally is unrestrained by the technical procedural and evidentiary rules governing the conduct of criminal trials").

In addition, Lampl makes much of the fact that he was, he contends, the "target" of the special purpose grand jury's investigation and that, therefore, the act of subpoenaing him to testify violated his constitutional right against compelled self-incrimination. Lampl's assertion is misplaced. It is well established that "the Fifth Amendment does not prevent the grand jury from subpoenaing [a] prospective defendant, or target, to appear as a witness." Sara Sun Beale et al., Grand Jury Law & Practice, § 6:12 (2d ed.); accord United States v. Washington, 431 U.S. 181, 97 S.Ct. 1814, 52 L.Ed.2d 238 (1977) (Fifth Amendment does not prohibit the use of grand jury testimony by a "target witness" in a later prosecution of that witness). Rather, the Fifth Amendment operates in grand jury proceedings to permit witnesses who are subpoenaed to refuse to answer specific questions, the answers to which the witness reasonably believes would be incriminating. See United States v. Mandujano, 425 U.S. 564, 574-575, 96 S.Ct. 1768, 48 L.Ed.2d 212 (1976); see also Hoffman v. United States, 341 U.S. 479, 486, 71 S.Ct. 814, 95 L.Ed. 1118 (1951) (privilege may be invoked in grand jury proceedings where "witness has reasonable cause to apprehend danger from a direct answer"). Here, Lampl never sought to assert his privilege, either prior to or during his testimony before the special purpose grand jury, and thus he has suffered no violation of his Fifth Amendment rights.

Our state constitutional privilege against self-incrimination, Ga. Const. of 1983, Art. I, Sec. 1, Par. XVI, generally functions in this same manner. See generally Paul S. Milich, Ga. Rules of Evidence, § 27:1, p. 946 (2014-2015 ed.). Of relevance to the subject of the "target witness," our evidence code prohibits a grand jury from compelling the very appearance of a witness — as opposed to his incriminating testimony in response to specific questions — only where that witness has been "charged in [a] criminal proceeding with a criminal offense." Former OCGA § 24-9-20(a)5; accord State v. Butler, 177 Ga.App. 594, 340 S.E.2d 214 (1986); Jenkins v. State, 65 Ga.App. 16, 14 S.E.2d 594 (1941) (construing predecessor to former OCGA § 24-9-20(a)). This prohibition applies only to those who have been charged with an offense — i.e., accused in a returned or proposed charging document — at the time they are called to testify. Compare Jenkins, 65 Ga.App. at 23, 14 S.E.2d 594 ("the grand jury had no lawful right to call the accused before it while considering the bill of indictment against him"), with Butler, 177 Ga.App. at 595, 340 S.E.2d 214 (grand jury was authorized to subpoena witness who, though later indicted, was "not charged with, or accused of, any offense at the time she was called"). One who has not been so charged may be compelled to appear before a grand jury, though he retains the option, during his appearance, of invoking his privilege against self-incrimination and refusing to testify regarding incriminating matters. Butler, 177 Ga.App. at 594-595, 340 S.E.2d 214.6 This is true even if the witness is a "target" of the grand jury's investigation.7

Here, there is no evidence in the record that, at the time Lampl testified before the special purpose grand jury, he had been actually charged in any indictment or presentment.8 Accordingly, while the special purpose grand jury lacked proper authority to subpoena Lampl, the act of doing so did not violate Lampl's privilege against compelled self-incrimination in any of its constitutional or statutory incarnations.

For the foregoing reasons, the superior court erred in dismissing Count VIII and in suppressing Lampl's testimony before the special purpose grand jury as sanctions to remedy the overbreadth of the special purpose grand jury's investigation. Accordingly, we reverse.9

Judgment reversed.

All the Justices concur.