The Labour Party has ended a formal complaint against six national newspapers after claiming the process was “unacceptably compromised” by an email leak.
Labour had lodged a complaint with the Independent Press Standards Organisation in August over coverage of Labour leader Jeremy Corbyn attending a wreath-laying ceremony in 2014.
Photos of Corbyn at the ceremony in Tunisia reappeared in papers in August this year.
These photos printed in the Daily Mail with the writing: “A memorial wreath in his hand, Jeremy Corbyn stands feet from the graves of terror leaders linked to the Munich Massacre.”
The paper said the Labour leader was pictured near the graves of members of Black September, the group that killed 11 Israeli athletes at the 1972 Olympics.
Other newspapers also covered the photos of Mr Corbyn.
The complaint was made against the Times, the Sun, the Daily Mail, Daily Telegraph, Daily Express and Metro.
Labour says that the party leader visited the Palestinian National Cemetery to attend a ceremony honouring the victims of a 1985 Israeli airstrike.
A spokesperson for the Labour Party said: “Our view remains that the reporting we complained about seriously misrepresented the nature of what took place, those buried in the cemetery and the mainstream Palestinian leaders conducting the ceremony, and these inaccuracies breached the IPSO code.
“Regrettably, confidential communication with IPSO was leaked and it was unable to trace the source or assure us it would not recur, and we considered that the complaints process was unacceptably compromised.
“We therefore decided we would not be taking this IPSO complaint any further.”
IPSO confirmed that it is no longer investigating any complaints about the articles, but declined to comment on Labour’s claim that the process was compromised.
An email was published in the Guardian earlier in October when the newspaper suggested the complaint had been temporarily paused after Labour missed a deadline.