French First Lady Valerie Trierweiler remains in hospital following media reports of an alleged affair involving President Francois Hollande.
She entered hospital on Friday "for rest and some tests", her office said, after Closer magazine published images linking him to actress Julie Gayet.
Mr Hollande did not deny the report but protested at invasion of his privacy.
Conservative opposition leader Jean-Francois Cope has suggested the drama has damaged France's image abroad.
Ms Trierweiler is expected to leave hospital on Monday, her office told AFP news agency.
Political commentators have called on Mr Hollande to clarify her role as first lady.
The French press has also been asking questions about the flat, just round the corner from the Elysee Palace, where the pair apparently met.
It has been reported that it was borrowed by Ms Gayet from a friend, another actress, with links to the Corsican mafia.
A presidential news conference scheduled for Tuesday on plans to boost the flagging economy now looks like being overshadowed by Mr Hollande's private life, correspondents say.