"Australian law requires the detention of all non-citizens who are in Australia without a valid visa (unlawful non-citizens). This means that immigration officials have no choice but to detain persons who arrive without a visa (unauthorised arrivals), or persons who arrive with a visa and subsequently become unlawful because their visa has expired or been cancelled (authorised arrivals). Australian law makes no distinction between the detention of adults and children."
"Australian law requires the detention of all non-citizens who are in Australia without a valid visa (unlawful non-citizens). This means that immigration officials have no choice but to detain persons who arrive without a visa (unauthorised arrivals), or persons who arrive with a visa and subsequently become unlawful because their visa has expired or been cancelled (authorised arrivals). Australian law makes no distinction between the detention of adults and children."