<P> Australian laws authorize preventive detention in a variety of circumstances . For example, mandatory detention in Australia (a form of immigration detention) is applied to asylum seekers who arrive in Australian territorial waters or territory, until their status as an asylum seeker is established . </P> <P> In Australia's most populous State, New South Wales, preventive detention regimes have established powers to detain or to continuously monitor and limit particular activities of those who were once convicted of various serious sexual and violent offences . Recently, this has been extended, with the State government now able to control the free movement, speech, association and work of individuals and businesses via Serious Crime Prevention Orders (' SCPOs'). Based on provisions in the United Kingdom, a range of state officials may apply to the NSW District or Supreme Courts to create an SCPO consisting of any conditions they consider appropriate . These conditions may include positive obligations - such as an obligation to report to a police station - or negative' prohibitions' or' restrictions', for instance, a prohibition on travelling beyond a certain location . Failure to comply with the SCPO, carries with it a maximum penalty of five years' imprisonment . </P> <P> SCPOs have been described as a "watershed extension of state power in New South Wales" by legal academics, and were strongly opposed by the legal community when they were introduced and passed into with less than two weeks' consideration by the Parliament of NSW . </P> <P> In Canada, anyone declared a dangerous offender by the courts is subject to an indefinite period of detention </P>

Who introduced the preventive detention bill in the parliament