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Labour's ruling body is poised to sack a “conspiracy” theorist Parliamentary candidate who questioned evidence over Jo Cox’s murder, the Grenfell fire and the Manchester terror attack.

Mandy Richards, selected for marginal Worcester just weeks ago, tweeted that Jo Cox’s murder was “conveniently bereft of evidence”.

She also questioned why there were “still no images/footage of physical damage at Manchester Arena” and suggested authorities were “concealing full scale of loss of life” at Grenfell Tower.

It comes after a Sunday newspaper revealed Ms Richards brought failed High Court action against 22 bodies including MI5, the Army, Royal Mail and her own landlord.

A judge in March 2017 deemed her claims, including that authorities tried to poison her, “totally without merit”.

(Image: Mandy4Labour/Twitter) (Image: Mandy4Labour/Twitter) (Image: Mandy4Labour/Twitter)

The High Court made 14 civil restraint orders banning her from taking further action without a judge’s permission.

Senior Labour sources said Ms Richards failed to disclose the court case or tweets when asked if anything in her background could “bring the party into disrepute.”

That could give Labour’s ruling NEC - which has not yet endorsed her candidacy - a justification to remove her.

Left-slate NEC member Jon Lansman, who founded the pro- Jeremy Corbyn group Momentum, said the party’s selection processes were “clearly inadequate”.

He declined to comment on Ms Richards’ case directly, but told the Mirror: “I have long been concerned at how little members actually see of non-local candidates they choose to be MPs, in some cases for decades.”

The NEC Organisation Committee’s next meeting was due to be on July 3 but a source said it could make a decision much sooner. “We are dealing with the matter with urgency,” the source said.

Mike Foster, who was Worcester’s Labour MP from 1997 to 2010, said local members were “mortified” and demanded Ms Richards is “sacked immediately”.

He said: “The local party knew nothing about Mandy’s history when they made the decision.

“There’s shock that the party machinery allowed the candidacy to go forward.”

Ms Richards, from Hackney, North London, stood for the London Assembly in 2012 and 2016.

(Image: Mandy4Labour/Twitter) (Image: Mandy4Labour/Twitter)

She won the Worcester selection after saying she had worked for Dawn Butler, now a shadow minister, for two years before moving to work for Hackney Council in 2008.

Court papers say she brought her High Court case against 22 defendants, alleging her mail had been “interfered” with, her flat suffered “unexplained power surges” and she may have been spied on.

In a second case, Ms Richards alleged possible “vote tampering, election rigging or adjudication error” during a London Assembly vote she lost in 2016.

Shadow Home Secretary Diane Abbott gave evidence to the case where she said Ms Richards had “become an obsessive” and her claims “cannot be true”, court papers show.

In that case, the Election Commissioner said Ms Richards was alleging a “conspiracy of monumental and criminal proportions which simply did not occur.”

Meanwhile, Ms Richards shared a video on Twitter on 9 April 2017 about the Westminster terror attack with the caption “are we being lied to again?”.

She tweeted alongside the video: “Glad someone asking right questions about terror coverage. Jo Cox incident conveniently bereft of evidence too.”

On 24 May 2017 she tweeted: “Can news agencies, police or anyone else for that matter explain why still no images/footage of physical damage at Manchester Arena?”

On 16 June 2017 she tweeted: “Lack of information on Grenfell Tower missing persons suggests authorities concealing full scale of loss of life as families left in anguish”.

Worcester is held by Tory Robin Walker with a 2,490 majority.

Ms Richards issued a lengthy defence of her High Court action saying she had tried for months to resolve issues with the various authorities.

She added: “I apologise to Labour Party members for any consternation or upset the articles published this weekend may have caused, but I can assure you categorically the cases brought were all above board.”