Uefa have told Liverpool that they have included the racist chanting from a section of CSKA Sofia's crowd in their report of the game.
The Bulgarian side face sanctions after Liverpool striker Djibril Cisse was on the receiving end of monkey chants from the crowd.
"The Uefa official has told our secretary Bryce Morrison that he has heard the monkey noises and he will include that in his report," said Liverpool spokesman Ian Cotton.
Liverpool boss Rafa Benitez expressed his disappointment at the chanting.
"Always it is a pity to hear such things, but the Uefa official has heard and it has gone in his report," said Benitez.
"The atmosphere in terms of support was good in the ground, but the monkey noises are a pity. We must learn and not do it because it is really bad for football.
"The Uefa officials have done the report."
The Bulgarian side face sanctions after Liverpool striker Djibril Cisse was on the receiving end of monkey chants from the crowd.
"The Uefa official has told our secretary Bryce Morrison that he has heard the monkey noises and he will include that in his report," said Liverpool spokesman Ian Cotton.
Liverpool boss Rafa Benitez expressed his disappointment at the chanting.
"Always it is a pity to hear such things, but the Uefa official has heard and it has gone in his report," said Benitez.
"The atmosphere in terms of support was good in the ground, but the monkey noises are a pity. We must learn and not do it because it is really bad for football.
"The Uefa officials have done the report."