UEFA has appointed an investigator to look at fresh claims of “potential discriminatory incidents” at a Hungary game at the European Championship.
Details of the incidents at the game between Germany and Hungary in Munich on Wednesday were not specified.
A separate investigation was already opened into incidents at Hungary’s two games in Budapest against Portugal and France.
Hungary fans have shown anti-gay banners and have been accused of chanting homophobic slogans in their stadium. Fans also marched to the Puskas Arena on Saturday protesting against players taking a knee to support equality.
Germany fans flew rainbow flags on Wednesday and one person ran onto the field waving a flag next to the Hungary players during their national anthem.
It is unclear if the latest UEFA investigation includes incidents involving Germany fans.