This is an appeal under S.J.C. Rule 2:21, 421 Mass. 1303 (1995), from a single justice's denial of a petition for relief under G. L. c. 211, s. 3 (1994 ed.). As this is a discovery matter in a civil trial, an appeal was available to a single justice of the Appeals Court under G. L. c. 231, s. 118, first par. (1994 ed.). The single justice committed no error of law and did not abuse his discretion. His denial of the plaintiff's request for relief is affirmed.

So ordered.

A single justice of this court denied Felix Santiago's (defendant's) request for relief pursuant to G. L. c. 211, s. 3 (1994 ed.), seeking an order prohibiting the Commonwealth from bringing him to trial before a jury on a charge

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of murder in the Boston Juvenile Court after he had been tried by a judge without a jury in the Roxbury Division of the District Court. The District Court judge had adjudicated the defendant delinquent by reason of murder in the first degree. Thereafter the defendant exercised his right to claim a jury trial, but he claims that the evidence at the bench trial was insufficient as a matter of law to sustain the charge on which he was found guilty and that therefore it would violate his right not to be put twice in jeopardy if he is now tried before a jury. Being of the view that the single justice correctly denied interlocutory relief and that all the relief to which the defendant may be entitled can be obtained on review if the defendant is convicted, the judgment of the single justice is affirmed pursuant to S.J.C. Rule 2:21, 421 Mass. 1303 (1995).

Judgment affirmed.