Cabinet minister Andrea Leadsom has hit out at a “coward” who sent her an anonymous death threat.
The Leader of the House of Commons revealed on Monday she has received a letter promising to “take lives”.
The Conservative MP appears to have been targeted due to her support for Brexit.
The letter, signed by “THE REAL 48 PER CENT”, reads: “If you attempt to take away part of someone’s identity, there are consequences.
“We have watched as you have led us to the edge of the abyss. We will watch no longer.
“You have taken lives on our side. Now we will take lives on yours.
“We are coming for you.”
Posting an image of the letter on Twitter, which was addressed to her in Parliament, Ms Leadsom commented: “Pretty despicable whoever sent me this.
“We live in a democracy – death threats because you don’t agree? And unsigned? Coward…”
Last week, fellow Leave-supporting Tory MP Zac Goldsmith said a similar letter had been sent to an 80-year-old in his Richmond Park constituency.
The Guido Fawkes website reported six prominent Leave donors had also received similar letters.
Late last year, Remain-supporting Conservative backbencher Dominic Grieve was forced to report death threats to police after leading efforts to defeat the Government on flagship Brexit legislation.
Other Tory Remainer rebels, who have been dubbed “mutineers”, have also previously revealed death threats.
Ms Leadsom was a prominent member of the Vote Leave campaign during the EU referendum and argued for Brexit in a national TV debate.
She also challenged Theresa May for the Conservative leadership in 2016 before withdrawing from the race.
Last week, the Prime Minister used a speech marking the centenary of some women being given the vote to warn of a “coarsening” of public debate.
“The ideal of a truly plural and open public sphere where everyone can take part is in danger,” Theresa May said.
“A tone of bitterness and aggression has entered into our public debate.
“In public life, and increasingly in private conversations too, it is becoming harder and harder to conduct any political discussion, on any issue, without it descending into tribalism and rancour.
“Participants in local and national public life – from candidates and elected representatives to campaigners, journalists and commentators – have to contend with regular and sustained abuse.
“Often this takes the form of overt intimidation.”