(Reuters) - European soccer's governing body UEFA has opened an investigation after Sevilla goalkeeper Marko Dmitrovic was attacked by a fan on the pitch in Thursday's Europa League match at PSV Eindhoven, The Athletic sports website reported. Players and staff from both teams gathered around Dmitrovic and the pitch invader before stewards intervened and took the invader off the field. Sevilla lost the knockout stage playoff 2-0 but still advanced to the next round with an aggregate score of 3-2. UEFA did not release a statement but The Athletic said the governing body confirmed to the website on Friday that a case had been opened following the incident. Dmitrovic, who had a red bruise on his neck after the incident, urged UEFA to intervene.