This is an appeal from a judgment of a single justice dismissing a petition for extraordinary relief brought by the petitioner (hereinafter called the defendant) pursuant to G. L. c. 211, § 3. 1 In this pretrial petition, the defendant challenges the sufficiency of the evidence pre *198 sented to the grand jury, which indicted him for having wilfully and maliciously burned a building in violation of G. L. c. 266, § 2. He further asserts that the prosecutor’s countenancing of testimony indicating that probable cause had been found in the District Court impaired the grand jury’s integrity. We conclude that this is not an appropriate case in which to exercise our extraordinary powers under G. L. c. 211, § 3. Accordingly, we affirm the single justice’s denial of the defendant’s petition.
It is well settled that we will not ordinarily review interlocutory rulings in criminal cases under G. L. c. 211, § 3, “since the rights of criminal defendants are generally fully protected through the regular appellate process.”
Costarelli
v.
Commonwealth,
In an attempt to come within this two-pronged test, the defendant argues (1) that he was denied his substantive right to a proper indictment as a condition precedent to a Superior Court trial and (2) that a postconviction appeal is inadequate to protect this substantive right because the right allegedly infringed is that of not being tried at all except upon satisfaction of the condition precedent. The defendant’s attempt fails, however, on both grounds.
“[Tjhere is undeniable weight to the argument that, where it is clear by reason of established facts and established law that the defendant cannot be convicted, the Commonwealth and the defendant should not be put to the trouble and expense of a trial.”
Commonwealth
v.
Hare,
In addition, there is no showing by the defendant here of irremediable error within the meaning of Gilday v. Commonwealth, supra, and subsequent cases, which entitles the plaintiff to extraordinary pretrial relief under our c. 211, *200 § 3, powers. The rights of the defendant as to the alleged errors are capable of full protection through the regular appellate process.
Similarly, the claim of prosecutorial misconduct fails to qualify for the extraordinary remedy afforded by G. L. c. 211, § 3. The defendant claims that a witness’ statement that probable cause had previously been found in the District Court should be attributed to the prosecution as an attempt to influence unduly the grand jury. See
Commonwealth
v.
Favulli,
Having concluded that the defendant has failed to allege facts which would entitle him to relief under G. L. c. 211, § 3, we affirm the judgment denying the defendant’s petition. Further proceedings consistent with this opinion are to be had in the Superior Court.
So ordered.
Notes
General Laws c. 211, § 3, as appearing in St. 1973, c. 1114, § 44, provides in pertinent part: “The supreme judicial court shall have general superintendence of all courts of inferior jurisdiction to correct and prevent errors and abuses therein if no other remedy is expressly provided; and it may issue all writs and processes to such courts . . . which may be necessary to the furtherance of justice and to the regular execution of the laws.”
The defendant’s reliance on
Myers
v.
Commonwealth,
A dictum in
Commonwealth
v.
St.Pierre,
