As well as the monkey chanting, some Bulgarian fans made Nazi salutes during the game.
Mihaylov had faced pressure to resign from Bulgarian Prime Minister Boyko Borissov who later called the fans making Nazi salutes “retards” whilst arguing England had “overdramatized” the incident.
“The other fans were amazing! We do not comment behavior of England`s football hooligans in Sofia,” he said.
“We do not say they are the pride of their nation. So they need to be more humble in their statements about Bulgaria. The Bulgaria is the most tolerant nation.”
UEFA President Aleksander Čeferin blamed the “rise of nationalism” across the continent for the “unacceptable behavior” of some soccer fans who continue to racially abuse players.
“Believe me, UEFA is committed to doing everything it can to eliminate this disease from football. We cannot afford to be content with this; we must always strive to strengthen our resolve,” he said.
“More broadly, the football family — everyone from administrators to players, coaches and fans — needs to work with governments and NGOs to wage war on the racists and to marginalise their abhorrent views to the fringes of society.
“Football associations themselves cannot solve this problem. Governments too need to do more in this area. Only by working together in the name of decency and honour will we make progress.”
Later on Tuesday, European football’s governing body opened disciplinary proceedings against the BFU. UEFA’s proceedings listed a number of charges, including racist behavior, specifically chants and Nazi salutes.
Seemingly unfazed by the ugly scenes, England won 6-0 but the result was almost the last thing on the England players’ minds after the match.
Marcus Rashford, who opened the scoring with a wonderful goal, tweeted: “Not an easy situation to play in and not one which should be happening in 2019. Proud we rose above it to take three points but this needs stamping out.”
Football journalist Darren Lewis told CNN Sport that Bulgaria must face “a stringent punishment” before explaining why he thought issues such as this still continue to surface.
“There is no black representation at the top of their [Bulgarian] game, just like there isn’t at the top of UEFA. That’s why so few people have any faith in their ability to actually understand this issue,” Lewis told CNN World Sport.
‘A real minority’
Monday’s game put UEFA’s protocol in dealing with such abuse to the test and it seemed to be working when a stadium announcement told fans that racist behavior was “interfering with the game” and that if it continued, the match would be abandoned.
It did continue, although less in the second half, but England refused the option to walk off the pitch with team coach Gareth Southgate twice seen speaking to his players.
England’s manager acknowledged that abandoning the match could have sent out the ultimate message but his players were unanimous in their decision.
England fan Demi D’Cunha, who was at the stadium to watch the game, said it was initially difficult to hear the chants from his seat amongst the away supporters.
“England fans were singing the whole game but once it started happening everyone was shushing each other so when [Raheem] Sterling and [Tyrone] Mings got on the ball we could hear,” he told CNN Sport.
“It was really strange because everyone was on their phones, trying to work out what was going on.”
The 25-year-old identified one particular group at the other end of the stadium for hurling the most abuse but said there was no sign of any more racism after the game.
“It must be a real minority. I’m not sure who the people are who were doing it or where they would have gone,” he added, noting the large police presence around the stadium.
Meanwhile Bulgaria captain Ivelin Popov spent the half-time break pleading with the home fans to stop the abuse.
However, as England players and staff criticized the treatment they received, Bulgarian coach Krasimir Balakov said he “personally did not hear the chanting.”
Prior to the match, Balakov had argued that England has a worse problem with racism than Bulgaria.
“I didn’t hear any bad language used towards their or our players,” he said.