Spartak Moscow have been charged with racist behaviour by UEFA after Liverpool striker Bobby Adekanye was targeted during last week's Youth League match.
The 18-year-old attacker was subjected to monkey chants by a section of home fans after coming off the bench in the 2-1 defeat suffered by Steven Gerrard's side at Spartak's academy.
Liverpool submitted a complaint to UEFA, who have now taken action.
"Disciplinary proceedings have been opened following the UEFA Youth League group stage match between FC Spartak Moskva and Liverpool FC (2-1), played on September 26 in Russia," said a UEFA statement.