the law enforcement officers investigate. They gather facts; or at least they should. They take statememts from the accussor or accussors. They interview the alleged crimminal. They may or may not arrest him.
Ultimately, the DA makes the decision to press charges or in the case of questionable charges should refer it to the Grand jury.
What false statements are you refering to? An officer has committed no wrong doing if he gathers facts and takes statements which are presented unvarnished to the DA.
Now if the persons making charges make knowingly false charges, that's another story.
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