A Kent MP is being investigated after liking a tweet her party claims is anti-Semitic.

Rosie Duffield, who is the only Labour MP in the county, has come under-fire after liking a post on X, formerly Twitter, from Father Ted writer Graham Linehan.

Mr Linehan was replying to a tweet from comedian Eddie Izzard, who has launched a bid to become an MP, which said: “I’m a trans superhero — but if I’d lived in Nazi Germany I’d have been murdered for it.”

The Irish comedy writer, who describes himself as a women’s rights campaigner, responded: “Ah, yes, the Nazis, famously bigoted against straight white men with blonde hair.”

Duffield, 52, liked the tweet back in March, which sparked backlash from LGBT Labour, a campaign group, and it is now being investigated by the Labour Party, the Sunday Times reports.

It is not the first time the politician, who represents the “ultra-marginal” Canterbury and Whitstable seat, has come under fire from her own party.

She recently claimed leader Sir Keir Starmer and the party had ostracised her for her stance on trans rights, likening being in the Labour party “to an abusive relationship” and has been branded transphobic for supporting online criticism of a tweet saying “only women have a cervix”.

Ms Duffield has campaigned against people with male genitalia who identify as women being allowed to enter female-only spaces such as changing rooms and prisons and has won support from Harry Potter author JK Rowling.

Sources close to Ms Duffield told the Sunday Times they think the liked tweet is being “weaponised” against her because of her gender-critical views, with one claiming the party made a “cynical calculation” that complaints about anti-Semitism are more likely to result in action than those about transgender issues.

Lord Austin of Dudley, a former Labour MP who resigned from the party over antisemitism while Jeremy Corbyn was leader in 2019, described the investigation into Duffield as “madness”.

He said: “There are very few MPs who have fought anti-semitism as strongly and as consistently as Rosie Duffield.

“She is one of the very few MPs who turned up and showed her support for the ‘enough is enough’ demonstration against anti-Semitism in 2018 and has consistently opposed anti-Semitism ever since.”

The Kent MP understood to currently not be on the party’s approved list of candidates to stand at the next general election.

She is reported to have responded to the allegations at length and denies all the charges against her.

The Labour MP has been approached for comment.