A memorial wreath in his hand, Jeremy Corbyn stands feet from the graves of terror leaders linked to the Munich Massacre.
The picture was among a number taken during a service to honour Palestinian 'martyrs'.
Buried in the cemetery in Tunisia are members of Black September, the terror group which massacred 11 Israeli athletes at the 1972 Olympics.
But on a visit to the cemetery this week, the Daily Mail discovered that the monument to the air strike victims is 15 yards from where Mr Corbyn is pictured – instead he was in front of a plaque that lies beside the graves of Black September members
The air strike victim's monument, containing the 47 names of Palestinians killed in 1985
One picture places Mr Corbyn close to the grave of another terrorist, Atef Bseiso, intelligence chief of the Palestine Liberation Organisation.
Bseiso has also been linked to the Munich atrocity. Another image shows the Labour leader apparently joining in an Islamic prayer while by the graves.
Last night sources close to Mr Corbyn insisted he was at the service in 2014 to commemorate 47 Palestinians killed in an Israeli air strike on a Tunisian PLO base in 1985.
But on a visit to the cemetery this week, the Daily Mail discovered that the monument to the air strike victims is 15 yards from where Mr Corbyn is pictured – and in a different part of the complex.
Instead he was in front of a plaque that lies beside the graves of Black September members.
Images from the Palestinian Embassy Website archive, Jeremy Corbyn is seen in Tunisia at the Martyrs Cemetary on a hill in Hamman Chatt laying wreaths with members of a Palestinian Conference delegation
Another image shows the Labour leader apparently joining in an Islamic prayer while by the graves
The plaque honours three dead men: Salah Khalaf, who founded Black September; his key aide Fakhri al-Omari; and Hayel Abdel-Hamid, PLO chief of security.
Adjacent to their graves is that of Bseiso. All were assassinated either by the Israeli secret service Mossad or rival Palestinian factions.
With his party engulfed in a row over anti-Semitism, the pictures give Mr Corbyn fresh questions to answer about his alleged sympathy for extremists.
'It beggars belief that anyone would wish to honour the terrorists behind the brutal massacre of 11 Israeli athletes at Munich,' said Jennifer Gerber, director of Labour Friends of Israel.
'However, it is sadly utterly unsurprising that Jeremy Corbyn appears to have done so. Others will rightly regard it is as totally sickening.'
In other developments:
Mr Corbyn recorded his visit to the Tunisian cemetery – a year before he became Labour leader – in an article for the communist newspaper, the Morning Star.
He said wreaths were laid to mark the 1985 bombing but also 'on the graves of others killed by Mossad agents'.