England's Euro 2020 qualifying win over Bulgaria in Sofia was halted twice in the first half with fans warned about racist behaviour.The first pause came in the 28th minute with England leading 2-0.A stadium announcement then condemned the abuse before stating the match would be abandoned if it continued.However, the game was stopped again in the 43rd minute before restarting after discussions between the referee and England manager Gareth Southgate.England went on to win 6-0 to strengthen their place at the top of Group A.After the game, the Football Association condemned the abuse, saying: "We can confirm that England players were subjected to abhorrent racist chanting while playing in the Euro 2020 qualifier against Bulgaria.After making a pass, England defender Mings glanced over his shoulder and could be heard calling towards the touchline: "Did you hear that?"Within minutes the game was stopped.Striker Harry Kane was in conversation with referee Ivan Bebek on the halfway line while a stadium announcement was made to condemn racist abuse and warn fans that the game could be abandoned if it continued. At the same time, England boss Southgate was talking to a number of his players.The game resumed but was stopped again just before half-time. Southgate and several England players were in discussion with match officials before the game was restarted for a second time.A group of Bulgaria supporters wearing black hooded tops - some wearing bandanas covering their faces - started to leave the stadium after the game was halted for a second time. BBC Radio 5 Live reported that some made right-wing and racist gestures while heading towards the exits.After six minutes of time added at the end of the first half because of the delay, Bulgaria captain Ivelin Popov was seen in a heated debate with a section of home supporters near the tunnel while the rest of the players headed for the dressing rooms for half-time.Uefa has a three-step protocol, introduced in 2009, in place for dealing with such incidents in matches.For the first step, the referee will speak to the stadium announcer and demand the halting of racist behaviour.If it continues, the referee can take the players off the field into the dressing rooms for a period of time and the stadium announcer will make another address.If it still continues, the match will be abandoned.In this incident, the first step was taken while the players were asked if they wanted to come off the pitch, but decided to continue.