a bitter 'custody battle' [=a legal fight between divorced parents about who will take care of a child]
He was taken 'into' (police) 'custody' last night and will be charged with murder today.
The witness is 'in protective custody'. [=is being kept in a safe place by the police]
(..) Buzz! Prisoners disabled, Commander Lotso! -Buzz, what are you doing? -Silence, minions of Zurg! You're in the custody of the Galactic Alliance! -''Zurg''? -''Galactic Alliance''? Oh, boy. Good work, Lightyear. (..)2010 Toy Story 3