Sogavare says ousted Police Commissioner not wanted
Mr Sogavare echoed the warning following reports that Mr Castle wants to return to complete some important tasks before the end of his employment contract in April this year.
But Mr Sogavare says as far as Government is concerned, Mr Castle is an undesirable immigrant.
The Prime Minister says Mr Castle is at liberty to challenge Government's decision through the courts.
Meanwhile the Prime Minister says recruitment process for Mr Castles' replacement is in progress.