According to CSA, Tahir was "verbally and racially abused by an unknown man" in the crowd. He reported the incident to stadium security, who then escorted Tahir to identify the man and eject him from the stadium.
A grainy video has emerged on Facebook, taken from the stands, which shows Tahir talking to fans. The only words that could be made out from Tahir was him saying "I have family too". Several spectators could be heard accusing him of being a bad sportsman.
CSA said they are "aware of the circulation of video footage," and that Tahir "made no physical contact with the offender or any of the children in the vicinity."
Racism goes against the ICC's code of conduct and spectators can face further sanctions and criminal prosecution if found guilty.