The discovery was made on the island of Porquerolles, where Pierre Barnes, from Grantham, Lincolnshire, vanished during a storm while on a bike ride on Saturday within hours of his family’s arrival for a half-term holiday.
His father last night was expected to identify the body which was recovered by the local fire and rescue service.
Toulon prosecutor Xavier Tarabeux told Agence France Presse: “The body matches that of the young boy who went missing on Saturday.”
He said the physical appearance matched as well as the clothes.
Mr Tarabeux added that a post mortem examination would take place as soon as possible