If the prosecutor intends to seek an enhanced sentence based upon
the defendant having one or more prior convictions, the prosecutor
shall include on the complaint and information a statement listing
the prior tribal conviction or convictions. The existence of the defendant's
prior conviction(s) shall be determined by the Court, without a jury,
at sentencing or at a separate hearing for that purpose before sentencing.
The existence of a prior conviction may be established by any evidence
relevant for that purpose, including, but not limited to, one or more
of the following:
(1) A copy of the judgment of conviction.
(2) A transcript of a prior trial, plea-taking or sentencing.
(3) Information contained in a pre-sentence report.
(4) The defendant's statement.