(1) A person commits the offense of refusing to aid a law enforcement officer when, upon a reasonable command by a person known to him to be a law enforcement officer, he intentionally refuses or fails to aid such law enforcement officer, in:
(a) Effectuating or securing an arrest; or
(b) Preventing the commission by another of any offense.
(2) Refusing to aid a law enforcement officer is a petty misdemeanor.
(3) A person who complies with this section by aiding a law enforcement officer shall not be held liable to any person for damages resulting therefrom, provided he acted reasonably under the circumstances known to him at the time.