(1)A person commits an offence if—
(a)he intentionally obstructs a person in the exercise of the powers conferred on him under section 97; or
(b)he fails or refuses, without reasonable excuse, to give to such a person any assistance which, under that section, he is under a duty to give to him.
(2)A person who commits an offence under this section is liable on summary conviction to a fine not exceeding level 5 on the standard scale.