Notwithstanding the decision of the justice, any materials submitted or testimony offered pursuant to § 21-28-5.07.1 shall be kept under seal and not available for inspection, except after a hearing by the issuing justice who shall determine, prior to their release, that the sealing of the records is no longer necessary for the protection of the integrity of the investigation or that the protection of any sources of information which contributed to the investigation will not be compromised by the release.