Memphis Grizzlies star Ja Morant is facing a $75,000 fine from the NBA after making gun finger gestures twice during Thursday night’s game against the Miami Heat, ignoring NBA warnings from hours earlier.

“Morant was previously warned by the league office that this gesture could be interpreted in a negative light,” the league said in a statement to NBC News on Friday.

Morant made the celebratory gestures throughout Thursday’s game, a battle the Grizzlies won 110-108 after Morant hit the game-winning basket at the last second.

The NBA investigated Morant earlier this week when he and the Golden State Warriors’ Buddy Hield used the finger-gun motions towards each other at the end of their game Tuesday night, which ended with a 134-125 Warriors’ win.