However, their visit was marred by allegations of racism and violence by their 2,100 supporters. A video taken by a City fan shows many visiting fans in the front rows of the second tier of the Etihad South Stand, where some Atletico fans were housed, standing with their arms outstretched in front of them saluting while waving a flag. READ MORE: Burnham warns Manchester airport queues will continue for ‘two months’ and says passengers will have to arrive three hours earlier as it reveals action plan The Manchester Evening News understands that racism was reported to the Greater Manchester Police (GMP) during the fight and that arrests were made. However, it is not clear how many at this stage. GMP has been approached for comment. MEN also understands that City are examining the incidents from yesterday’s game and will report them to UEFA. Any formal investigation into the allegations, which could lead to sanctions against Atletico if proven, will be dealt with by UEFA. There have also been hitherto unconfirmed reports of an attack on an aviator and away fans spitting at City fans in the lower division. A City fan called Nick, who was in the match and was sitting near the Atletico fans’ section in the third division of the South Stand, saying that he was “disgusted” with what he saw. “It started right away with them disapproving of the knee,” Nick said. Then, every time Raheem Sterling came down from the side of the field near them, they also booked him. Then they also made Nazi greetings. I have no doubt that they did. It was not just one or two, I would say it was a good 10 percent of the fans. “I was really disgusted. Maybe I’m a little naive, but I like to think that things like that just don’t happen anymore. the most disgusting fascist symbol you could make, it just made me feel sick. “ City lead 1-0 in next week’s rematch in Madrid with a goal by Kevin De Bruyne in the 70th minute separating the two teams. Read more related articles Read more related articles