What happens at an omnibus hearing?

According to the Minnesota Rules of Criminal Procedure, at an omnibus hearing the court determines: (1) the constitutional admissibility of evidence derived from searches, seizures, interrogations and identification procedures; (2) whether probable cause to proceed to trial exists (whether it is probable that the defendant committed the crimes charged in the complaint); and (3) other constitutional, evidentiary, or procedural issues capable of disposition prior to trial. Due to the size of their caseloads, however, several Twin Cities metropolitan counties have modified omnibus hearings into simple probable cause determinations with all other issues reserved for determination immediately before trial.