A specially-empaneled statewide grand jury shall be drawn and selected in the same manner as the county grand jury in the county in which the specially-empaneled statewide grand jury is to sit. A specially-empaneled statewide grand jury may, at the discretion of the presiding superior court justice, draw jurors from counties adjoining the county in which the statewide grand jury is to sit.
Mass. Gen. Laws ch. 277B, § 4