Everton are helping police after Brentford's Rico Henry and Ivan Toney said members of their family were racially abused in the Premier League match at Goodison Park.
Toney played the full 90 minutes as Brentford beat relegation-threatened Everton 3-2, tweeting after the game: "For the man that racially abused my family Il (sic) do everything I can to get you the punishment you deserve!"
In reply to Toney's tweet, Everton tweeted: "There is no place in football - or society - for racism. We are assisting Merseyside Police to ensure the individual is identified and dealt with appropriately."
Toney's team-mate Henry also tweeted, saying: "I never usually speak out on things that don't physically harm me or my family but to see my mom upset after being racially abused by a few Everton fans brought fire to my stomach! I will do anything for them & whatever it takes to get the small minority punished! This is not acceptable & must be investigated immediately."
In a club statement, Brentford said: "We are aware of an incident where racist abuse was directed towards family members of our players. A report has been made to both the police and to Everton FC.
"Brentford FC condemns all forms of discrimination and racist abuse in the strongest possible terms. We will offer our support to Rico's and Ivan's families and will fully co-operate with the investigation and any subsequent legal proceedings."
Forward Toney, 26, had tweeted just minutes before joking about the fireworks let off outside of the Brentford team hotel in the early hours of Sunday morning, saying: "Lovely display from the boys but not as good as the fireworks late last night. Normally I'm being woke up by my son but fireworks was a new one. Big 3 points!! Fans right behind us. Onto next week."
Merseyside Police said in a statement: "We are investigating reports that the families of two Brentford players were racially abused in Liverpool on Sunday [15 May].
"Allegations that a man directed racial abuse were made following the Premier League match between Everton and Brentford at Goodison Park."
Detective Inspector Catherine Cox said: "No matter what football team you support, there is absolutely no place for hate anywhere in Merseyside under any circumstances.
"Merseyside Police has investigated and successfully prosecuted so-called fans for racial abuse inside football stadia, and offenders have been handed football banning orders along with a criminal record for their behaviour.
"We will support the victims in this case and work with Everton Football Club to find those responsible and bring them to justice. Their views and their abuse is not welcome here in Merseyside, and they do not represent the overwhelming majority of football fans.
"I would like to take this opportunity to encourage any football fans with information on racial abuse to speak with officers or stewards at the ground, or call 101 so we can identify and locate offenders, and ensure they face the consequences of their actions."
Kick It Out head of player engagement Troy Townsend said on Monday: "Whilst investigations are ongoing, we cannot comment on the specifics of cases. However, the events of the weekend once again highlight the fact that hate is still alive and well within football.
"Our support goes out to the victims. We will not stop fighting until hate is eradicated from our sport. Football is a game for everyone."
Everton took the lead through Dominic Calvert-Lewin, but after Jarrad Branthwaite was sent off, Seamus Coleman's own goal brought the hosts level.
Richarlison then put Everton ahead from the penalty spot before the break, but Brentford hit back in the second half with quickfire goals from Yoane Wissa and Henry, before Salomon Rondon's late dismissal left Everton with nine men.
Discriminatory behaviour by fans at Premier League matches on Sunday show that "hate is alive and well within football", according to Kick It Out Head of Player Engagement Troy Townsend.
Hate won't win
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