6When authorisation may be given

6 When authorisation may be given A person may give an authorisation under section 8 if the person is satisfied there are reasonable grounds for believing: (a) a terrorist act has occurred or is likely to occur in the near future; and (b) the exercise of the powers under the authorisation will substantially assist in: (i) preventing the terrorist act or minimising the risk to public health or public safety relating to the terrorist act; or (ii) finding, preserving or removing evidence relating to the terrorist act; or (iii) apprehending a person responsible for committing the terrorist act or intending to commit the terrorist act.