16(1)If a police officer of at least the rank of superintendent has reasonable grounds for believing that the case is one of great emergency he may by a written notice signed by him require any person specified in the notice to provide an explanation of any material seized in pursuance of an order under paragraph 15.E+W+N.I.
(2)Sub-paragraphs (2) to (4) of paragraph 13 and paragraph 14 shall apply to a notice under this paragraph as they apply to an order under paragraph 13.
(3)A person commits an offence if he fails to comply with a notice under this paragraph.
(4)It is a defence for a person charged with an offence under sub-paragraph (3) to show that he had a reasonable excuse for his failure.
(5)A person guilty of an offence under sub-paragraph (3) shall be liable on summary conviction to—
(a)imprisonment for a term not exceeding six months,
(b)a fine not exceeding level 5 on the standard scale, or
(c)both.