The Bayern Munich winger, along with international team mate Karim Benzema, who was also placed under investigation, will now have to wait for police to unravel a prostitution ring centred around a night club in Paris's Champs Elysees district.
This is the first stage of criminal proceedings that can lead to charges. The offence carries a maximum three-year jail term and a 45,000-euro fine, but a conviction hinges on proving the accused knew the girl was under 18.
"I would say this unfavourable treatment is liable to ruin his concentration and attack the mental balance of a guy who for two months has already been extremely destabilised by this case," Sophie Bottai told Europe 1 radio.
Bottai said her client was "dismayed" about the magistrate's decision. The girl at the centre of the probe had told Ribery she was 20, the lawyer said. She was just 17 at the time.
"The investigation has been going on for two months (and) confirms even more he could not have known her age," she said.
Ribery was the most popular player before the World Cup fiasco, in which 'Les Bleus' were eliminated in the first round without winning a match. He was branded as one of the ringleaders in a revolt by players who boycotted a training session before their final game.
France's Health and Sports Minister Roselyne Bachelot and junior sports minister Rama Yade have previously said that any player under judicial investigation should not represent France.
"It's not a good example of a man to give to France's youth," junior minister Fadala Amara said.
New coach Laurent Blanc, nicknamed "The President" in his playing days, has been given the mission to restore the team's pride and has made clear discipline will be key.
The first sign will come when he names his first squad for France's friendly against Norway in Oslo on August 11.
