Maryland Criminal Procedure Section 11-704

      (a)      A person shall register with the person's supervising authority if the person is:

            (1)      a child sexual offender;

            (2)      an offender;

            (3)      a sexually violent offender;

            (4)      a sexually violent predator;

            (5)      a child sexual offender who, before moving into this State, was required to register in another state or by a federal, military, or Native American tribal court for a crime that occurred before October 1, 1995;

            (6)      an offender, sexually violent offender, or sexually violent predator who, before moving into this State, was required to register in another state or by a federal, military, or Native American tribal court for a crime that occurred before July 1, 1997; or

            (7)      a child sexual offender, offender, sexually violent offender, or sexually violent predator who is required to register in another state, who is not a resident of this State, and who enters this State:

                  (i)      to carry on employment;

                  (ii)      to attend a public or private educational institution, including a secondary school, trade or professional institution, or institution of higher education, as a full-time or part-time student; or

                  (iii)      as a transient.

      (b)      Notwithstanding any other provision of law, a person is no longer subject to registration under this subtitle if:

            (1)      the underlying conviction requiring registration is reversed, vacated, or set aside; or

            (2)      the registrant is pardoned for the underlying conviction.