Chelsea have vowed to take “the strongest possible action” against fans found singing an anti-Semitic chant.
Chelsea head of communications Steve Atkins said offenders will be banned if there is sufficient evidence.
He noted that Chelsea Football Club finds all form of discrimination abhorrent and that the language used in that song is totally unacceptable.
The chant about Morata, who scored against Leicester, was used to abuse London rivals Tottenham, who have a large Jewish fanbase.
The football’s equality and inclusion organisation, has also condemned the song and called for those responsible to be banned.