Football Association chairman David Bernstein has called the crowd incidents at the Manchester derby "deplorable" and says they must be "dealt with severely".
Rio Ferdinand was struck by a coin thrown from the crowd as Manchester United celebrated Robin van Persie's deflected last-minute winner, while only the intervention of City keeper Joe Hart prevented another fan confronting the defender.
And Bernstein told Sky Sports News: "It is deplorable to see those incidents and to see Rio Ferdinand with blood on his face is absolutely terrible."
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