Blanc left Paris by plane to rejoin his family in the Bordeaux region, telling reporters at the Bordeaux-Merignac airport that "it happened", adding he would not make further comments before the findings of the investigation are known.
The findings will be presented to the press on Tuesday during a news conference at the FFF headquarters and the FFF's extraordinary council will convene on Thursday with another news conference scheduled to follow.
Race and immigration are hot topics in France and many of Blanc's former international team-mates in the multicultural 1998 World Cup-winning side have offered divided opinions on the quota issue.
Blanc has denied accusations of racism and said any comments he made at the November meeting into dual nationality players were taken out of context but could "offend some sensibilities".
