The Football Association and Everton are set to investigate an incident in which forward Richarlison threw a flare into the crowd as he celebrated his goal against Chelsea on Sunday evening.
The Toffees beat Chelsea 1-0 to heavily boost their chances of Premier League survival after the Brazilian capitalized on Cezar Azpilicueta's mistake to net what proved the winner.
His celebrations though caught the attention of the club and the FA, after he picked a lit flare and threw it into the crowd at Goodison Park.
With pyrotechnics banned at English football stadiums, the incident could land the Brazilian in hot water.
The win against the European champions, who are yet to win at the grounds in the last five years, saw them move to 32 points, and could get out of the red zone if they win their match at hand.
Chelsea, on the other hand, were dragged into the top-four race, following wins for both Arsenal, in fourth, and Tottenham, in fifth.
With four matches to go, the battle on both ends of the table is set to go down to the wire.