Maryland Public Safety Section 3-110

      On written request, a law enforcement officer may have expunged from any file the record of a formal complaint made against the law enforcement officer if:

            (1)      (i)      the law enforcement agency that investigated the complaint:

                        1.      exonerated the law enforcement officer of all charges in the complaint; or

                        2.      determined that the charges were unsustained or unfounded; or

                  (ii)      a hearing board acquitted the law enforcement officer, dismissed the action, or made a finding of not guilty; and

            (2)      at least 3 years have passed since the final disposition by the law enforcement agency or hearing board.