Liverpool vs Bournemouth was stopped in the 28th minute after an allegation of a racist comment aimed at Antoine Semenyo.
Both Arne Slot and Andoni Iraola were spoken to by the referee Anthony Taylor after the game was paused.
"I am told via the Premier League Match Centre that Antoine Semenyo was the subject of a racist comment from the crowd," reported Sky Sports' Peter Drury on commentary.
"It was Semenyo himself who brought attention to it."
The game resumed again in the 31st minute.