JEREMY Corbyn has been slammed for making a salute linked to an Islamist organisation investigated over terror links.

The Labour leader was snapped giving a four-fingered Rabaa sign, which is seen by some as a symbol of allegiance to the Muslim Brotherhood.

The group, described as "bigoted and dangerous" by activists has been investigated by the UK and US over alleged extremist activities.

It is deemed a terrorist organisation in Russia and the Middle East.

Corbyn made the gesture during a visit to Finsbury Park Mosque in his Islington North constituency, and believed to have been taken in February 2016, after his rise to Labour leader.

Anti-extremism activist Maajid Nawaz compared the Muslim Brotherhood to far-right party the BNP, and condemned the far-left party leader.

He tweeted: "Non-terrorist, Islamist theocrats like the Muslim Brotherhood, are to Muslims what the BNP are to the English: bigoted, identitarian and dangerous.

"It should be as taboo for a left-wing politician to be associated with that group, as it is the BNP."

A spokesman for Mr Corbyn told the Telegraph last night: “The four-fingered gesture is a well-known symbol of solidarity with the victims of the 2013 Rabaa massacre in Cairo.”

Corbyn is already under fire after images emerged of him holding a wreath in a graveyard where terrorists who killed Israeli Olympic athletes in 1975 were honoured.

He has refused to apologise for his attendance.

And he's facing more questions about who exactly paid for the trip too - as it wasn't declared in his register of interests.

The Brotherhood was investigated in April 2014 by then Prime Minister David Cameron over alleged extremist activities.

It was found to not have been linked to terrorist related activity against in the UK - despite being deemed a terrorist organisation in other countries.

The news comes as the Labour party continues to try to get a grip on the anti-Semitism storm swirling around the party.

Foreign Secretary Jeremy Hunt said yesterday the Labour boss would have "no moral authority" to condemn terror attacks if he ever became prime minister.

Ratcheting up the pressure, he tweeted: "If Jeremy Corbyn thinks terrorism is justified for the causes he believes in, how would he as prime minister have the moral authority to condemn terrorist murders of British citizens?

"Unbelievable and shocking."