(1) In any proceedings
under this Act before a court, the court—
(a)
must, on the application of the Commissioner, take steps to maintain the
confidentiality of information properly classified by the Commissioner as
criminal intelligence, including steps to receive evidence and hear argument
about the information in private in the absence of the parties to the
proceedings and their representatives; and
(b) may
take evidence consisting of or relating to information so classified by the
Commissioner by way of affidavit of a police officer of or above the rank of
superintendent.
(3) The duties imposed
on a court by subsection (1) in relation to proceedings under this Act
apply to any court dealing (whether on an appeal under this, or another, Act
or otherwise) with information properly classified under this Act as criminal
intelligence or with the question of whether information has been properly
classified under this Act by the Commissioner as criminal intelligence.