Irfan Mohammed, pictured here with Sadiq Khan in December 2017 at City Hall, shared a conspiracy theory claiming Jews were warned about the 9/11 attacks on Facebook

A Labour councillor who sits on an equality panel shared a conspiracy theory claiming Jews were warned about the 9/11 attacks on Facebook.

Lambeth councillor Irfan Mohammed shared the comment which suggested that Jewish people working in the World Trade Centre knew about the terror attacks ahead of time.

The revelation comes amid rising tensions within Labour following the party's anti-Semitism crisis.

Mr Mohammed is a member of the London council's Equality Impact Assessment Panel and also the Faiths Together in Lambeth group, which claims to encourage 'constructive relationships among faith communities'.

Yet in December 2015 Mr Mohammed shared a post of anti-semitic remarks written by someone else onto his social media account.

The Facebook post said: 'Jews working in the World Trade Centre received a text message before the incident: 'Do not come to work in September 11'.

'Israeli ties to the September 11 attacks…'

Joe Glasman, from the Campaign Against Anti-Semitism, said: 'The claim that Jews were behind the 9/11 atrocities is one of the most vile antisemitic conspiracy theories of recent times, not least because so many Jews lost their lives that day.

'That a Labour Councillor's Facebook page has been used to disseminate this lie is utterly appalling.

Lambeth councillor Irfan Mohammed shared the comment which suggested that Jewish people working in the World Trade Centre knew about the terror attacks ahead of time

'Under Jeremy Corbyn's leadership, antisemitic discourse in the Labour Party has thrived, even amongst its own elected representatives.

'The once anti-racist Labour Party has been seized by antisemites. We have little faith that Mr Mohammed will receive anything more than a slap on the wrist'.

The Labour anti-Semitism row has exploded over recent weeks among growing anger and accusations that Mr Corbyn has refused to act on his promises to crack down on the abuse.

The latest wave of controversy was triggered when the Labour leader refused to adopt the full International Holocaust Remembrance Alliance's (IHRA) working definition of anti-Semitism.

Mr Corbyn tried to get on top of the row at the weekend by putting out a video acknowledging a 'real problem' of anti-Semitism in the Labour party.

Mr Mohammed is a member of the London council's Equality Impact Assessment Panel and also the Faiths Together in Lambeth group, which claims to encourage 'constructive relationships among faith communities'

But Jewish leaders have dismissed this latest attempt with Gideon Falter of the Campaign Against Antisemitism saying the clip was 'another bland statement devoid of any apology' and said he had not promised any specific action.

Labour's deputy leader Tom Watson called on Mr Corbyn to drop inquiries into two of the party's MPs – Margaret Hodge and Ian Austin – who both lost family members in the Holocaust - over their outbursts on anti-Semitism in the party.

He spoke out after the party was rocked by revelations that Peter Willsman - a Labour member and strong ally of Mr Corbyn - was secretly taped ranting that 'Jewish Trump fanatics' invented the anti-Semitism.

The anti-Semitism row has exposed deep rifts within the Labour party and threatens to cast a dark shadow over its party conference in September.

A Labour Party spokesperson said: 'The Labour Party takes all complaints of antisemitism extremely seriously and we are committed to challenging and campaigning against it in all its forms.'

'Complaints about antisemitism are fully investigated in line with our rules and procedures and any appropriate disciplinary action is taken.'