ORCHARD PARK, NY - SEPTEMBER 13: Richie Incognito #64 of the Buffalo Bills warms up before the game against the Indianapolis Colts at Ralph Wilson Stadium on September 13, 2015 in Orchard Park, New York. (Photo by Tom Szczerbowski/Getty Images)

Former four-time NFL Pro Bowl player to be investigated for alleged racial slur during playoff game

This could get ugly.

The NFL will reportedly investigate whether or not a racial slur was directed to Jacksonville Jaguars defensive end Yannick Ngakoue by Buffalo Bills guard Richie Incognito, according to Mike Florio of Pro Football Talk.

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Ngakoue made the accusation that racial slurs were used by Incognito during Sunday's game on Twitter:

According to Florio, NFL spokesman Brian McCarthy said the accusation will be looked into. The league will likely set up interviews with players from both teams in order to determine the validity of Ngakoue's claim. Ngakoue stood by his tweet when speaking with reporters on Monday morning:

Of course, Incognito was suspended by the Miami Dolphins for eight games in 2013 for his role in a bullying incident with teammate Jonathan Martin. He did not play in the NFL the following season and later joined the Bills in 2015.

Incognito and his agent have not responded to the allegation made by Ngakoue.