The French foreign minister has accused Boris Johnson, now his counterpart in the UK, of lying "a lot" while he was a leader for the Leave campaign.
"I don't have any doubt about Boris Johnson," Jean-Marc Ayrault said during an interview with French radio Europe 1.
"You know his style and his methods. He lied a lot during the [referendum] campaign."
The two men have met in the past when both were mayors - Mr Ayrault as mayor on Nantes and Mr Johnson as mayor of London.