Football: Alex Song and Gerard Pique fighting?

Barcelona stars Gerard Pique and Alex Song appear to have been scrapping while on top of the team's double-decker bus to celebrate their La Liga triumph.

                                           Gerard Pique (right) and Alex Song seem to be fighting on top of the Barcelona bus

In these astonishing pictures, former Arsenal midfielder Song and Pique seem to be fighting while the bus makes its way around the Catalan city. 

Club captain Carles Puyol and goalkeeper Victor Valdes look to be playing peacemakers in the end, but appear to be having a heated discussion of their own in the background as their team-mates grapple in front of celebrating supporters.

                                                             Song seems to land a slap on Pique's cheek during the scuffle