Supporters post series of antisemitic comments to Jeremy Corbyn's Facebook page

Mr Corbyn described Tuesday’s meeting as “positive and constructive”, but the Board and JLC criticised the Labour leader for a “disappointing” meeting in which he failed to meet the “minimum level of action” necessary.

A spokesman for the Labour Party insisted that those who express antisemitic views or attitudes “do not do so in (Mr Corbyn’s) name”.

He added: “Jeremy Corbyn is a militant opponent of antisemitism and he has made it clear there is no place for them in our party.

"If these antisemitic commenters are found to be Labour members, they will be investigated and appropriate action will be taken.”

Mr Corbyn’s Facebook page is public, meaning all users of the social media site are able to post comments to it.

The JC understands that the page’s administrators have installed an automatic ban on the terms “Zio”, “yid” and “kike”.

Jewish Labour MP Louise Ellman described the posts as “appalling”, saying they should have been immediately removed by Mr Corbyn’s office.

She said: “If it turns out that these comments were made by Labour Party members, they should be disciplined.”

The Community Security Trust (CST) said the comments contain “shocking” antisemitism, calling on Mr Corbyn to delete the posts and to investigate whether they were posted by Labour members.

A CST spokesman said: “Jeremy Corbyn has pledged to drive antisemitism out of the Labour Party.  We welcome this commitment, and a fitting place to start would be on his own Facebook page.”