576.This section inserts new sections 4D, 4E, and 4F into the Repatriation of Prisoners Act 1984. It creates a procedure for the arrest and detention of a person believed to be unlawfully at large from a foreign jurisdiction and who is present in the United Kingdom. The purpose of this section is to ensure that a person can be arrested and detained in custody while the relevant Minister determines whether or not to issue a warrant transferring responsibility for the continued enforcement of the prisoner’s sentence from the country in which it was imposed to the United Kingdom.