A Labour Party candidate and member of the shadow cabinet has denied singing “Hey Jews” to The Beatles song Hey Jude.
Labour leader Jeremy Corbyn has said he is looking into reports that Dan Carden changed the lyrics during a private bus journey.
Buzzfeed reported that he was travelling from London to Cheltenham races in March last year during the alleged incident.
Mr Corbyn said it was an "awful story" and "totally unacceptable" if true.
Asked about the reports on a visit to Leeds, he said: "Dan Carden has emphatically denied that.
"It is an awful story and if it's true it is utterly and totally unacceptable. I am looking into it."
Mr Carden, who is seeking to be re-elected as MP for Liverpool Walton, tweeted: "I have been categorical in my denial about allegations relating to a coach trip some twenty months ago.
"This was a coach full of journalists and MPs. If anyone genuinely believed any anti-Semitic behaviour had taken place, they would've had a moral responsibility to report it immediately.
"Yet this allegation is only made now when a General Election is imminent.
"I stand by my record as an anti-racist campaigner. I would never be part of any behaviour that undermines my commitment to fighting racism in all its forms."
