Wayne Rooney has been warned by the English FA after appearing to mouth "12th man" into a camera following Man United's defeat by Chelsea.

The United striker made the comment as he left the pitch at Stamford Bridge.

An FA spokesman said: "Wayne Rooney has been warned as to his future conduct following remarks made yesterday."

Sir Alex Ferguson will not face any action following his criticism of referee Martin Atkinson.

Ferguson condemned the decision to award the free-kick that led to Chelsea's winning goal as "absolutely ridiculous" and said such decisions mean people "lose faith in refereeing."