Administrative detention is when someone is held in jail or another facility without being charged with a crime. Think of it like a time-out, but for grown-ups.
Sometimes, governments have laws that allow them to detain people without charging them with a crime if they think the person might be a danger to others or to the country. This could be because the person is suspected of planning a crime, like a terrorist attack, or because they are illegally staying in the country.
In these cases, the government can detain the person for a certain amount of time without charging them with a crime or giving them a trial. This is called administrative detention.
Administrative detention can be controversial because people can be held for long periods of time without being able to defend themselves in court. However, it can also be seen as necessary to protect public safety and national security.