In order to obtain a warrant police must have .?

In order to obtain a warrant, police must demonstrate probable cause, which means they must provide evidence or reasonable grounds to believe that a crime has been committed and that specific evidence related to that crime can be found at the location specified in the warrant. This evidence is typically presented in an affidavit to a judge or magistrate, who must review it and determine whether to authorize the warrant. Additionally, the warrant must be specific about the place to be searched and the items to be seized.