If they were not actively opting out, then it was acceptable for them to be detained in hospital and be treated without a formal detention under a section of the Mental Health act.

如果他们没有主动决定不参加，那么，根据精神健康条例，将他们留在医院进行治疗，即使没有正式收留，都是可以的。

youdao

Investigators in Mexico say the detained suspect claims the ambush of a US couple near the Juarez city hall on Saturday,March 13, was carried out as an act of retribution against Arthur Redelfs, who worked as an El Paso County Sheriff's detention officer and was accused by gang members of mistreating their compatriots there.

VOA: standard.2010.04.01

In the Hamdi case, the Supreme Court considered the relationship between the current Authorization for Use of Military Force and the Non-Detention Act, which prohibits the detention of a U.S. citizen, except where authorized by an Act of Congress.

FORBES: Following NDAA Debate, Sen. Levin Incorrectly Asserts That AUMF Authorizes Detention of U.S. Citizens

The magazine, which is the journal of the Centre for Crime and Justice Studies at King's College London, said there were a further 14, 600 held under the Mental Health Act, 2, 300 in immigrant detention centres and about 470 in child prisons and secure children's homes.

BBC: NEWS | UK | Over 108,000 in detention in UK

Last week, Switzerland's justice minister publicly apologised to the victims of administrative detention, saying the apology should be seen as an act of "moral reparation".

BBC: The trauma of Switzerland's morality detentions