Chelsea have condemned chants by their own supporters about QPR defender Anton Ferdinand during Tuesday's 1-1 Champions League draw at Genk.
The travelling fans repeatedly sang about Ferdinand, who it is alleged was racially abused by Blues captain John Terry at Loftus Road on 23 October.
A Chelsea spokesman said in a statement: "The chanting was wholly inappropriate and we don't condone it."
Neither Uefa's delegate nor the referee included the chanting in their report.
The European governing body said it could still investigate should "any other piece of evidence of such chanting be made available". However, it would appear the London club is likely to escape sanction as it was not clear that the chants were racially motivated.
Blues manager Andre Villas-Boas insisted he had not heard the chanting.
"I was concentrating on the game," he said.
This incident comes on the day the Metropolitan Police launched a formal investigation into allegations Terry used a racial slur towards Ferdinand during his side's 1-0 defeat by QPR.
It is unclear whether Chelsea could face any action over the chanting.
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