( CNN ) -- Manchester City have lodged an official complaint with European football 's governing body after striker Mario Balotelli claimed he was racially abused during Thursday 's match away to Porto . City came from behind to win the first-leg Europa League tie 2-1 in Portugal , but the English Premier League leaders approached UEFA after the match when Italy international Balotelli complained of being subjected to racist chants from fans . UEFA confirmed to CNN Friday that City 's complaint had been received , but said a decision on whether to launch an investigation would not be made until the match delegate 's report had been received . Despite reports that Ivory Coast midfielder Yaya Toure , playing his first match since Sunday 's African Cup of Nations final loss to Zambia , was also subject to abuse , a City spokesman said the club only knew of Balotelli 's complaint . Did Liverpool 's U.S. owners act too late ? `` I did n't hear this because I was concentrating on the game . I do n't know if ( it happened ) to Mario and Yaya , '' City manager Roberto Mancini was reported to have said by the Press Association . Mancini , who also coached Balotelli when they were both at Inter Milan , praised the 21-year-old for maintaining his focus during the game . Balotelli has had a checkered disciplinary record since arriving in England in 2010 and has just returned from a four-match ban for stamping on Tottenham Hotspur 's Scott Parker during a league match in January . `` I think Mario did very well , he played very well , '' Mancini said . `` He was calm and it is important he continues like this . `` I think this provocation can happen every game . For this reason I spoke with Mario before the game . I said , 'Mario think and play , think what you should do during the game . ' '' Manchester clubs enjoy wins in Europa League . Balotelli , an Italian of Ghanaian descent , has been on the receiving end of racist taunts in the past when representing his country . He was repeatedly jeered when he made his second appearance for his Italy in a friendly match against Romania in November 2010 . Toure said after the Porto match that one of the reasons why he enjoys playing in England is the lack of racial abuse from fans . `` That 's why we all like the Premier League , because it never happens there , '' Toure told Sky Sports . `` Maybe in foreign countries they do n't expect black players . `` I think in future it will be okay , they will change their minds and the game will become more open . Football is football and the fans come to enjoy the game , and we do n't want things like this to happen . '' Despite Toure 's claims , the English game has been hit by several recent race-related incidents . A police investigation was launched last month when a Liverpool fan was alleged to have racially abused third division Oldham 's Tom Adeyemi during an FA Cup tie . Liverpool striker Luis Suarez has also recently returned from an eight-match ban for directing a racial slur at Manchester United 's Patrice Evra . In July , England captain John Terry will face trial for alleged racial abuse of Queens Park Rangers defender Anton Ferdinand . Manchester City 's Micah Richards and Newcastle 's Sammy Ameobi have received racist abuse on microblogging website Twitter , as have former Everton striker Louis Saha and Scotland-based players Maurice Edu and Kyle Bartley , both of Rangers , and Inverness ' Gregory Tade .
Manchester City report alleged racial abuse from Porto fans to UEFA . Liverpool striker Mario Balotelli claims he was racially abused during the match in Portugal . The EPL leaders came from behind to win the first - leg match 2 - 1 . UEFA will wait to receive the match delegate 's report before deciding whether to investigate .