Manchester United have issued a statement condemning tasteless chants heard from their own fans during Saturday's 4-0 win over Wigan.
A minority of the United crowd taunted Liverpool fans during the early stages of the Premier League game at Old Trafford, ignoring pre-match pleas from manager Sir Alex Ferguson for calm following the report into the Hillsborough disaster.
A United statement read: "The club deplore it. The manager has made the club's position very clear on this matter.
"It is now up to the fans to respect that."
United supporters on Saturday night had taken to Facebook and Twitter to play down the significance of the chants, claiming that while they had been aimed at the Merseyside club, they only related to the fallout from last season's Luis Suarez-Patrice Evra race row.
The chant, which includes "It's never your fault, it's never your fault, always the victims, it's never your fault," could be heard from a section of fans in the Stretford End.
United travel to Anfield next weekend for Liverpool's first home game since the findings of an independent panel investigating the Hillsborough disaster were published.
The Manchester United Supporters Trust on Saturday night issued a statement saying that it fully agreed Ferguson's comments, but insisted the chants were not about the Hillsborough disaster.
MUST chief executive Duncan Drasdo said: "Following this week's developments and release of revelatory information on the Hillsborough tragedy, MUST wishes to make it absolutely clear that just as we condemn chants mocking the Munich air disaster we also condemn any chants relating to Hillsborough or indeed any other human tragedy.
"We did hear the usual anti-Liverpool chants at the match today but we're pleased to say, despite some reports to the contrary, there was nothing that was specifically referencing Hillsborough.
"Any attempt to suggest otherwise is irresponsible given the forthcoming fixture between the clubs and furthermore risks needlessly upsetting the bereaved families further at a time when they are understandably trying to find closure.
"We enjoy a fierce rivalry but these issues transcend that rivalry. We agree 100% with the statement made by Sir Alex Ferguson - this is the time for supporters of these two great clubs to represent their clubs with the integrity and honour that our glorious history demands."