FIFA have announced that the Football Association will face no disciplinary action over allegations of racist chanting from England fans.
European anti-racism body FARE had reported that songs calling for Rio and Anton Ferdinand to be burned on a "bonfire" were sung during England's 8-0 away win against San Marino in March.
It was widely suggested that the chants were aired in support of John Terry, who retired from international duty in September 2012 after being found guilty of racially abusing Anton by the FA
However, FIFA say that a lack of evidence has hampered their case.
"We can confirm that in the case of alleged racist chanting during the recent World Cup qualifier San Marino vs England, it has been decided not to open disciplinary proceedings due to the lack of concluding evidence," a statement read.
"The FA's attention was however drawn on the pertinent provisions of the FIFA regulations and they were requested to display prudence and adopt appropriate preventive measures in order to avoid that incidents of such nature do occur in the future."
Rio vocally supported his brother throughout the court case which preceded the FA charge and led to Terry avoiding a criminal conviction.
The Manchester United centre-back pulled out of the England squad prior to the clash with San Marino, citing his strict fitness programme.