The NFL is reviewing all aspects of the incident between Terrelle Pryor's and fans in Kansas City on Monday night, including what took place in the stands, league spokesman Joe Lockhart told the Washington Post's Mark Maske.  

The Redskins wide receiver said his reason for flashing a middle finger to a Chiefs fan on Monday night had nothing to do with losing a football game. Pryor explained in an Instagram post that he had been called "N----- several times to the point where an NFL employee had to ... stand by me" starting into the second quarter until the end of the game. "[This] is the exact reason why guys are kneeling during the anthem."

Pryor continued: "I chose not to kneel because as a team we decided to be one and stand ... but as I walked in [the] tunnel hearing some of you call me n-----and say 'F you' to me, me flicking the person off is more deserving. I do apologize to my teammates and the organization. But at some point you keep calling us the n-word we going to start acting up."

Video showed Pryor after the game walking through the tunnel as fans yelled at him, and Pryor yelling back at them and giving them the finger before a Redskins employee grabbed him and led him back to the locker room.

"We have no tolerance for racial remarks directed at anyone in an NFL stadium," Lockhart said, adding that any fan found to have directed racial remarks at Pryor would not be welcome in Arrowhead Stadium.

Last month, a Lions fan who posted racist messages to Snapchat was stripped of his tickets and banned from Ford Field.

Pryor, who grew up in Western Pennsylvania and was a quarterback at Ohio State, played for the Browns and Raiders before signing with the Redskins in the offseason. Through four games he has 13 receptions for 186 yards and a touchdown.