A PR boss has been sent a death threat alluding to the killing of Jo Cox after being accused of orchestrating a coup against Labour leader Jeremy Corbyn.
McKeever spoke out on Tuesday saying a blog had "suggested a link between me, my workplace and the moves by Labour MPs in Parliament", referencing the mass resignations from Corbyn's cabinet in an attempt to oust him.
His company, Portland, is described on its website as a firm that helps businesses "achieve their communications goals". It was accused by Unite general secretary Len McCluskey of being behind the Corbyn coup on Sunday.
McKeever had initially refused to comment on the allegations, but spoke out for the first time when he became embroiled in the controversy after The Canary named him in a piece concerning the plot against Corbyn.
The lawyer denied the claims but revealed he had only stayed silent after receiving a "hand-delivered death threat" that said he would "prepare to be coxed".
It was "a reference to the murder two weeks ago of Labour MP, Jo Cox" - McKeever claimed.
The letter read:
Hello comrade, we've watched you leave the building, we've watched you on the Strand. Your blood is the price of your treachery. Prepare to be Coxed. :-)
McKeever added that the police had advised that in the interest of him and his family he would not be commenting further.
He added only: "We have a Labour Party to return to after this mess. I hope we all reflect," signing off with the hashtag #MoreInCommon, which referenced a quote from Cox's maiden speech.
When contacted, police would not confirm McKeever's claim.