Bulgaria great Hristo Stoichkov fought back tears in a TV appearance as he demanded action over the racist abuse England players suffered in their Euro 2020 qualifier in Sofia.
The former Ballon d'Or winner suggested "heavier punishments" than stadium closures could be required in response to the shameful scenes that marred Monday's match.
A section of Bulgaria supporters aimed monkey chants at Raheem Sterling, Tyrone Mings and Marcus Rashford and were also seen performing Nazi salutes.
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Bulgarian Football Union president Borislav Mihaylov stepped down amid the fallout and UEFA has opened disciplinary proceedings against the organisation.