Earlier this week, reports circulated that Ralph Gracie had been involved in a physical altercation with Flavio Almeida at IBJJF No-Gi Worlds. The incident was originally reported only by a few spectators, but after it gained traction, Ricardo Almeida spoke up about the situation.

Since then, however, Dan Lukehart shared a clip that shows Gracie and Almeida standing next to each other and having a conversation before Gracie suddenly knocks Almeida in the face with an elbow. The clip is short and doesn’t show the aftermath of the strike, but it provides visual support to the claims about the alleged assault. Take a look.

Correction: This article has been edited to better reflect the original source of the video.