Elanga, who was taken out in the 72nd minute, was involved in an incident with opposition players after the final whistle, with the Swedish Football Association saying the Manchester United the winger was racially abused by an Italian player.
The European football governing body said in a statement: “In accordance with Article 31 (4) of the UEFA Disciplinary Regulations, a UEFA ethics and disciplinary inspector has been appointed to conduct an investigation disciplinary concerning incidents … “
The Italian Football Federation (FIGC), however, denied the allegations, saying they hoped the relevant authorities would clarify the situation soon.
“The FIGC categorically denies that an opponent was the victim of racist abuse by a national Under-21 team player in yesterday’s game …
Sweden U21 coach Claes Eriksson said: “No one should have to be exposed to racism, it is totally unacceptable. We all support and support Anthony in this area.”
Elanga broke into United’s first team last season and scored his first goal for the club in the win over Wolves on the final day of the Premier League campaign.