UPDATE: The fan who was arrested Sunday before the Eagles-Vikings game reportedly punched a police horse. Click here to see the mug shot.

PHILADELPHIA --- A massive fight that left at least one fan bloodied and created chaos in the parking lots of Lincoln Financial Field broke out on Sunday just hours before kickoff between the Eagles and Minnesota Vikings.

OPEN PHOTO GALLERY HERE.

It is not clear at this point what started the fight, which took place around 3 p.m. EST in Lot M by the Eagles' home stadium. The brawl got so out of control that six horses were called to the scene in an attempt to control the crowd.

Below is video from part of the confrontation.

WARNING: the video includes graphic language not suitable for all audiences.

The fight was between Eagles' fans and the police officers, and it doesn't appear any Vikings' fans were involved. The incident, which required Philadelphia police officers and Pennsylvania State troopers to get under control, left at least one fan beaten and blooded.

Despite the late kickoff, Eagles fans were seen arriving to the stadium to start tailgating as early as 7 a.m. EST on Sunday.

The brawl in the parking lot comes just days after a news clip circulated on social media of a man identified as Drew Baydala, representing Minneapolis-based Ticket King, warned Vikings fans with this message:

"If the Vikings win, yes, I would take off any sort of colors," Baydala said referencing the Vikings' purple and yellow scheme. "I know it sounds ridiculous, like we're almost talking about gangs here. But it's no joke down in Philly. It really isn't."

A Minnesota couple identified as Steve and Dorothy Erban, who were helping Vikings fans make there way to Philadelphia for the game, also warned Eagles' fans of what the scene might be like both prior to and during the game.

"I would advise you not to be over-inebriated," Steve Erban said, "because they (Eagles fans) will be."

Eliot Shorr-Parks may be reached at eshorrpa@njadvancemedia.com. Follow him on Twitter @EliotShorrParks. Find NJ.com Eagles on Facebook.