If the chief administrative officer or, in the chief administrative officer's absence, a person designated by the chief administrative officer for this purpose, upon reviewing the report, finds that there was reasonable cause to believe that such person has willfully disrupted the orderly operation of the campus or facility, the chief administrative officer may enter written confirmation upon the report of the action taken by the officer or employee. If the chief administrative officer or, in the chief administrative officer's absence, the person designated by the chief administrative officer, does not confirm the action of the officer or employee within 24 hours after the time that consent was withdrawn, the action of the officer or employee shall be deemed void and of no force or effect, except that any arrest made during such period shall not for this reason be deemed not to have been made for probable cause.
Ca. Pen. Code § 626.4