Legal Question in Criminal Law in Minnesota

Normally a defendant (their attorney) would challenge whether police lawfully obtained evidence during the pre-trial part of the court process, at a Contested Omnibus Hearing or misdemeanor evidentiary hearing. However, it maybe possible to litigate those issues at the same time as a court trial (to a judge only), with agreement of the prosecutor and judge. Any conviction can be appealed. But pre-trial and evidentiary issues should be raised and litigated at the trial court level to better preserve them for potential appeal.