Twitter trouble for Ryan Babel

The Holland international used his Twitter account to post a mocked-up picture of Webb wearing a United shirt, after the World Cup official awarded the home side a first-minute penalty and sent off Liverpool captain Steven Gerrard.

The Football Association confirmed to Press Association Sport that they would be looking into the matter, as Babel also wrote: "And they call him one of the best referees? That's a joke. SMH*."

However, Babel has apologised for comments he made about referee Howard Webb in the aftermath of Liverpool's FA Cup exit to Manchester United with another post which read:

""My apology if they take my posted pic seriously. This is just an emotional reaction after losing an important game. Sorry Howard Webb."

*SMH = Shaking My Head (Internet slang)