Labour leadership frontrunner Jeremy Corbyn was dragged into a fresh row over his links with extremists today after it emerged one of his aides said the 7/7 London tube bombings were revenge for the Iraq war.

Radical anti-war campaigner Salma Yaqoob, who is a member of a committee organising Mr Corbyn's bid to become Labour leader, claimed the suicide attacks which killed 52 were 'a reprisal event'.

The former Birmingham councillor also refused to join a standing ovation for war veteran awarded the George Cross for bravery after throwing himself on a Taliban grenade to protect his comrades during an ambush in 2008.

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Radical anti-war campaigner Salma Yaqoob (right), who is a member of a committee organising Jeremy Corbyn's bid to become Labour leader, claimed the 7/7 attacks which killed 52 were 'a reprisal event'

Ms Yaqoob refused to join a standing ovation for L/Cpl Matt Croucher (pictured, right, with Victoria Cross medal holder Lance Corporal Johnson Beharry), who was awarded the George Cross for bravery after throwing himself on a Taliban grenade to protect his comrades in an ambush in 2008

Ms Yaqoob sparked fury after staying seated in protest when L/Cpl Matt Croucher was invited into the Birmingham city council chamber.

The 43-year-old radical once lead the left-wing Respect Party and has stood in general elections against Labour MPs.

Today's revelations, reported by the Sun, after a string of revelations about Mr Corbyn's links to hard-left extremists and terror apologists.

Last night it emerged Mr Corbyn had spoken at the annual meeting of a group allied to the American 'neo-Nazi' LaRouche movement.

Thousands of supporters attended a rally in Nottingham last night to support Mr Corbyn's runaway bid to become Labour leader

Anarchist comic Russell Brand came out in support of Mr Corbyn in a video posted on his YouTube channel this week

It followed revelations that in 2009 he twice spoke alongside and dined with the Lebanese fanatic Dyab Abou Jahjah – who gloated over the deaths of British soldiers and dubbed the 9/11 attacks 'sweet revenge'.

Mr Corbyn has also admitted attending 'two or three' events hosted by the Holocaust denier Paul Eisen and may have given his organisation a donation.

He has also been forced to defend his links to Raed Salah, a preacher convicted in a Jerusalem court in 2008 of using the 'blood libel', an anti-Semitic slur.

Under Labour Party rules Ms Yaqoob – who resigned from the Respect party in 2012 after a fall out with new leader George Galloway - should be barred from voting in the leadership contest.

Mr Corbyn hosted Dyab Abou Jahjah (centre) at a House of Commons meeting in 2009 - despite the fanatic gloating over the deaths of British soldiers and dubbed the 9/11 attacks 'sweet revenge'

Last night it emerged Mr Corbyn had spoken at the annual meeting of a group allied to the American 'neo-Nazi' LaRouche movement - headed by Lyndon LaRouche (left). Mr Corbyn has also admitted attending 'two or three' events hosted by the Holocaust denier Paul Eisen (right)

Last night Labour MPs called on Mr Corbyn to explain Ms Yaqoob's role in his campaign.

MP for Dudley Ian Austin said: 'Most party members will be appalled that a leader of a political party that has been trying to defeat Labour councillors and MPs – let alone someone who has said the things she has – could be involved in Jeremy Corbyn's campaign.

'I think we should be told what role she has been playing and what discussions she has been involved in.'

John Woodcock added: 'It is absurd to say this woman has anything in common with the Labour Party unless she publicly and empahtically renounces her past statements about terror attacks.

'If Jeremy Corbyn is going to be taken seriously as a potential Labour Party leader, he must distance himself from these sorts of views and make it clear they have no part of his leadership bid.'