held — simple past tense and a past participle of hold1 .
interned — to restrict to or confine within prescribed limits, as prisoners of war, enemy aliens, or combat troops who take refuge in a neutral country.
apprehended — Simple past tense and past participle of apprehend.
captive — A captive person or animal is being kept imprisoned or enclosed.
arrested — to seize (a person) by legal authority or warrant; take into custody: The police arrested the burglar.
seized — to take hold of suddenly or forcibly; grasp: to seize a weapon.
restrained — characterized by restraint: The actor gave a restrained performance.
confined — If something is confined to a particular place, it exists only in that place. If it is confined to a particular group, only members of that group have it.
gaoled — to take into or hold in lawful custody; imprison.
put away — to move or place (anything) so as to get it into or out of a specific location or position: to put a book on the shelf.