Here&#x27;s another interesting fact.<p>Once the arrested bit is set, it is immutable in the eyes of the State of California. Law enforcement knows if you have been arrested in the past even if the specific reasons are expunged at the request of the arrestee. Also, there&#x27;s a very narrow window to request that arrest records be expunged. If you are arrested and acquitted or the charges are dropped, get in contact with the court as soon as possible to make sure you are within the window.