Jacksonville Jaguars defensive tackle Yannick Ngakoue took to Twitter on Sunday night, hours after his team’s AFC wild-card win over the Buffalo Bills, to both shout out the team’s city and its fans and also to casually accuse Bills guard Richie Incognito of using racial slurs toward him on the field:

“Great win today!,” Ngakoue wrote. “And 64, you goin to have to come harder than some weak racist slurs. I’m proud of my African heritage, as are 70% of the other Black players in this league. #Iaintjonathanmartin”

No. 64 for Buffalo is Incognito, and Ngakoue’s hashtag refers to Jonathan Martin, the player Incognito was accused of bullying while both were members of the Miami Dolphins. His bullying also included racial slurs, such as allegedly calling the mixed-race Martin a “half-[racial slur]” among other things.

Incognito was suspended by Miami for the final eight games of the 2013 season, and did not play anywhere in 2014. The Bills signed him in 2015.

As of this writing, there has not been a response from Incognito to Ngakoue’s accusation.

UPDATE: One of Incognito’s teammates, rookie tackle Dion Dawkins, tweeted a defense of Incognito.

“Just for the world to know, everyone always tryna put some bad thing on [Incognito] i was next to my guy the entire game and the entire season and believe me, if he was saying some racist stuff I would have been the first to let him know that was out of line. Cut The BS.”

ESPN’s Adam Schefter wrote Monday morning that the NFL is “looking into” Ngakoue’s accusation against Incognito.