Donald Trump furious as Twitter flag his tweets with fact-check warning

US President Donald Trump has slammed Twitter after it flagged his tweets with a fact-check warning for the first time.

Trump claimed the social media platform is "interfering in the 2020 presidential election" and "completely stifling FREE SPEECH" after it flagged two of his tweets on Tuesday.

Earlier on, Trump had tweeted that mail-in ballots were "fraudulent", adding that "mail boxes will be robbed".

The tweets now include a link that reads: "Get the facts about mail-in ballots."

Users who click on the link will be taken to a Twitter "moments" page that includes fact checks and news stories about Trump's unsubstantiated claims.

The page also includes a "what you need to know" box which highlights three separate claims about postal voting from Trump and information as to why they are incorrect.

In response, Trump tweeted:"Twitter is now interfering in the 2020 Presidential Election.

"They are saying my statement on mail-in ballots, which will lead to massive corruption and fraud, is incorrect, based on fact-checking by Fake News CNN and the Amazon Washington Post.

"Twitter is completely stifling FREE SPEECH, and I, as president, will not allow it to happen!"

Before Tuesday, Twitter had declined to apply its community guidelines to Trump.

However, the social media platform appears to be finally taking a tougher stance with the president.

It comes after he was criticised for repeatedly claiming that former Republican representative Joe Scarborough killed an aide in his office 20 years ago.

The body of Lori Kay Klausutis, 28, was found in Scarborough's office in Florida in 2001, while he was in Washington DC.

Trump has repeatedly tried to implicate Scarborough.

Mrs Klausutis' husband, Timothy J Klausutis, wrote to Twitter CEO Jack Dorsey. He said: "My request is simple: please delete these tweets."

He said that Trump has worsened the "bile and misinformation" spread about his wife which has made it difficult for him to move on with his life.

Earlier on in May, Trump tweeted: "When will they open a Cold Case on the Psycho Joe Scarborough matter in Florida.

"Did he get away with murder? Some people think so. Why did he leave Congress so quietly and quickly? Isn't it obvious? What's happening now? A total nut job!"

In his letter, Klausutis said his wife had an undiagnosed heart condition which caused her to fall and hit her head at work.

This has been confirmed by doctors.