A fan video of a fight between Croatian and Mexican fans in the stands of the Arena Pernambuco stadium in Recife has gone viral.
The Facebook page www.ultras-tifo.net published the video that it's making rounds across the internet.
It isn't clear what started the brawl, but the incident ended up involving a couple of dozen of fans from both national teams.
Stadium security can be seen trying to stop the violent brawl from escalating but end up finding themselves in the receiving end of some of the punches.
No reports of arrest where made by local authorities.