R.I. Gen. Laws § 12-11.1-3: Statewide grand juries — Impaneling.

Whenever the attorney general makes application in writing, the presiding justice shall order the impaneling of a statewide grand jury to attend the superior court at any places and for any period, not exceeding eighteen (18) months, that he or she directs. The attorney general may apply for the impaneling of as many statewide grand juries as he or she deems necessary.