Labour’s deputy leader Tom Watson has accused a member of the party’s ruling body of being a “loud-mouthed bully” – after he was recorded criticising members of the Jewish community.
The National Executive Committee’s Peter Willsman suggested Jewish “Trump fanatics” were behind accusations of anti-Semitism in the party.
Mr Watson tweeted to say he was disgusted by the comments.
Mr Willsman, a supporter of Labour leader Jeremy Corbyn, has apologised.
Earlier this month, more than 60 British rabbis signed an open letter that said anti-Semitism in sections of the Labour Party was “severe and widespread”.