The 22-year-old was a 83rd-minute substitute at Turf Moor, a game which Burnley won 2-0. However, his performance was overshadowed by an incident that is said to have happened 16 minutes before his introduction.
The incident in question came when the former Manchester United man is alleged to have spat in the direction of supporters. Lancashire Police looked into the event after a complaint was made by a Leeds fan in the away section of the ground.
A statement said: “Lancashire Police are aware of an alleged incident involving a Burnley player during the second half of the Premier League game between Burnley and Leeds United at Turf Moor yesterday (October 18). We are currently working with Burnley Football Club to establish the facts.”
Now, the FA have released a statement on the incident as they await a response from the player.
"It is alleged the player acted in breach of the laws of the game and/or in an improper manner and/or used abusive and/or indecent behaviour by spitting at or in the direction of Leeds United supporters around the 67th minute.
"Hannibal Mejbri has until Friday 28 November to provide a response."
Norwich City's Borja Sainz, back in January, received a six-game ban and was fined £12,000 for spitting at an opponent in a fairly similar incident. Mejbri could be in for a similar punishment over the coming weeks as the story unfolds.
