ITV News has learned that French police would apprehend and arrest missing 15-year-old Megan Stammers and her maths teacher Jeremy Forrest if they were found in the country.
French state prosecutor Laurent Jaubert said the pair, who are on a list of missing people in France, would not be actively searched for by officers but they would be arrested if spotted at routine patrols.
However, Mr Jaubert said the couple were not necessarily in France and could be anywhere in Europe.
Runaway teacher Jeremy Forrest will return to the UK after he agreed to his extradition in court.
In Bordeaux they hoped to start a new life, but Megan Stammers is already back in the UK and now her teacher Jeremy Forrest is due in court.
Megan Stammers, the 15 year-old girl who disappeared with her teacher, is back in the UK, after flying back from Bordeaux in France.