Wayne Rooney is to be investigated by FIFA's disciplinary committee after being sent off during England's World Cup quarter-final defeat against Portugal.

The Manchester United striker was shown a red card after appearing to stamp on Ricardo Carvalho before pushing Cristiano Ronaldo on the chest.

FIFA spokesman Markus Siegler said: "Wayne Rooney got a direct red card so he will automatically be suspended. It will be a disciplinary case.

"If you may ask why (he was sent off) I refer to law 12 on violent conduct to make that clear.

"Like for any other player (who got a red card) the committee will decide on the penalty."

Rooney insists the stamp on Carvalho was accidental and although England coach Sven-Goran Eriksson accepts that, he had no complaints about referee Horatio Elizondo's decision.

"I spoke to Wayne after the game and he had no intention to do it," said Eriksson.

"I went to the referee to speak and he was 100 per cent sure it was a red card. He told me he hit the other player and where he was hit so I can't complain about that."