Twitter Labels President Trump's Tweet With Fact-Checking Warning

A post by US President Donald Trump has been given a fact-check label by Twitter for the first time.

Mr Trump tweeted, without providing evidence: "There is NO WAY (ZERO!) that Mail-In Ballots will be anything less than substantially fraudulent."

Twitter put a warning label in the post and a subsequent tweet under its new policy on misleading information. 

President Trump responded by tweeting again, saying the social media giant "is completely stifling free speech".

Twitter's notification displays a blue exclamation mark underneath the tweets, suggesting readers "get the facts about mail-in ballots".