Furious Stamford Bridge officials have warned that any further disturbances will lead to the strongest possible action.
At the FA Cup semi-final between Chelsea and Tottenham Hotspur in 2012, a minutes silence to pay respect to the 96 Liverpool fans who lost their lives in the Hillsborough disaster was cut short after a section of Chelsea fans jeered and booed.
Sunday's game at Anfield will be emotionally charged before the 30th anniversary of the tragedy, and Chelsea striker Giroud insisted there cannot be a repeat.
Nowadays one time is one too much. These guys dont belong to Chelsea. Obviously we condemn this type of thing, he said. It was a very small minority. We are proud of most of our fans.
Chelsea have been involved in a number of other racism controversies this season. When asked if this was a chance to restore the clubs pride, Sarri, the manager, said: Yes, I think so. It is really a very good opportunity for our fans. I am sure that our fans will have very great behaviour in Liverpool.
Chelsea are reviewing video footage of the incident, in an effort to identify the other three fans involved. All six are facing bans, the length still to be determined.
On Friday afternoon they released a statement reminding fans to observe the planned minutes silence or face punishment.
The actions of a mindless and unwanted minority in Prague has once again brought a spotlight upon Chelsea supporters, embarrassing the club and their fellow fans.
It is our expectation that this will not be repeated in Liverpool, and where there is evidence of any inappropriate or disrespectful behaviour, we will take the strongest possible action.
Its still only a few people doing it, but the stronger the reaction is from all of us, the more it will help to avoid things like this in the future.Jergen Klopp, Liverpool FC manager
Klopp praised Chelseas zero tolerance stance on the issue and denounced bigots who he says have no place in the multicultural soccer community.
Its disgusting, another example of something which absolutely should not happen, Klopp said.
We should not see it as a Chelsea thing or a Liverpool thing. Its another sign that something is going wrong a little bit out there.
Its still only a few people doing it, but the stronger the reaction is from all of us, the more it will help to avoid things like this in the future.
Liverpool v Chelsea, Anfield, Sunday 1.30am