The English Football Association says it has found no video evidence of racist chanting by England fans against Rio and Anton Ferdinand after a complaint was made to FIFA.
European fans monitoring group Fare sent a report to FIFA after apparently abusive chants during last Friday's World Cup qualifier at San Marino were highlighted in British newspapers.
FA executive Adrian Bevington says there was "no reason to dispute the media reports" but added that "we have not found any recorded evidence of the specific discriminatory chanting referring to Rio and Anton Ferdinand."
Rio Ferdinand declined to join the England squad last week after being selected. His brother, Anton, was involved in a high-profile racism case that led to Chelsea captain John Terry losing the England captaincy and later quitting international soccer.