A Lambeth councillor is being investigated by the Labour Party after a post he shared on Facebook claimed Jews were warned about the 9/11 attacks.

Cllr Irfan Mohammad “reposted a video without recognising that it contained anti-Semitic content” in 2015.

His action was brought to light by the Campaign Against Anti-Semitism before it was reported in the Daily Mail.

Lambeth Labour chief whip Cllr Jane Edbrooke said: “We take any allegation of anti-Semitism extremely seriously and condemn anti-Semitism in all its forms. There is no place in our party for anti-Semitism.

“Cllr Irfan Mohammed has apologised and there will be an investigation.”

Joe Glasman, head of Political and Government Investigations at Campaign Against Antisemitism, said the claim is “one of the most vile, anti-Semitic conspiracy theory of recent times.”

Mr Mohammed, who is also a member of the Lambeth Inferfaith Forum,  apologised for the post and asked Cllr Jane Edbrooke to begin disciplinary action in a letter posted to Twitter.

The letter read: “I am writing to refer myself to you as the chief whip to ask for a disciplinary investigation into a past action in 2015 which as been reported in the media.

“I reposted a video without recognising that it contained anti-Semitic content. This was a stupid thing and thoughtless thing to do and I recognise that it was an anti-Semitic act. It is totally unacceptable and it was my mistake which I do not shy away from.

“I apologise unreservedly, I completely accept that I have hurt the Jewish community through my action. I apologies to friends who I have offended. I apologise to constituents who I have offended. And I apologise to my Labour colleagues who fight racism every day. I have let down lots of people,” he said.

The tweet garnered support from fellow councillors, including cabinet members Cllr Ed Davie and Cllr Paul Gadsby.

Mr Gadsby tweeted in reply: “You’ve made a very sincere apology here Irfan and it’s something others in our party could learn from.”

Mr Mohammed was elected as councillor at the last elections, so was not a councillor when he shared the post.

He said he would be writing to synagogues in Lambeth to personally apologise, and was “keen to listen and learn from them.”