Three foreign nationals have been arrested following a UK Border Agency raid on a restaurant in Nottingham.
The operation was part of a crackdown tackling illegal workers and organised immigration crime.
The officers went to Ahmed's Restaurant in Sneinton Dale on Wednesday to question staff about their right to work in the UK.
They arrested three Pakistani men - two had overstayed their visas while the third had broken his visa conditions.
The agency is seeking to remove all three illegal workers from the UK as soon as possible.
The owners of Ahmed's Restaurant were warned that they could be fined up to £30,000 for employing the men, unless bosses can prove that they carried out the correct right-to-work checks on their employees.