Donald Trump and his supporters have been slapped down for spreading false voting fraud claims and conspiracy theories amid America's agonising wait for election results.
Bogus or misleading posts have gone viral on social media, and some of them have been boosted by the Republican president himself and his sons in a desperate bid to cling to power.
Trump's Twitter account, which has 88 million followers, is covered in warning labels after he tweeted false or inaccurate claims.
In Arizona, Trump supporters - some of them armed with assault rifles or handguns - surrounded a polling centre amid unsubstantiated rumours that votes for the real estate mogul were deliberately not being counted.
Click here to follow all the latest US election updates in our live blog.

These are just some of the conspiracy theories and voting claims that have been debunked in the aftermath of Tuesday's vote.
Trump's 'cheating' claims
At every opportunity, Trump has tried to undermine the legitimacy of the election and drum up claims about voting fraud without providing any evidence to back them up.
Live coverage of his speech on Thursday night - filled with lies and conspiracy theories - was cut off by major TV networks in the US.
He claimed he was the victim of a conspiracy by "big media, big money and big tech" for "historic election interference" and accused the Democrats of corruption without any evidence.
There's no evidence of widespread illegal votes despite Trump's allegations during his speech and in his tweets.
His claim that election officials in Pennsylvania and Detroit, Michigan, tried to ban election observers from polling stations is false.
Claims of vote dumping have also been debunked.
Sharpiegate
Rumours spread on right-wing social media accounts on Tuesday night that some votes in Arizona's Maricopa County were not being counted because voters used Sharpie pens to mark their ballots.
Local election officials insisted that was not true and said "Sharpies are just fine to use".
Maricopa County officials were trying to inform voters that Sharpies did not interfere with ballots and had posted a video explaining that on Election Day.
Yet several voters filed a lawsuit joined by the Trump campaign.
Similar rumours about Sharpies or other writing tools and ballots have circulated in Chicago, Michigan, Massachusetts and Connecticut in recent days.
The Sharpie rumour was labelled “false information” on Facebook by fact-checkers, and it blocked the "sharpiegate" hashtag.
Twitter was labelling tweets that “misleadingly claim ballots were invalidated".
Armed Trump fans demand votes be counted... as votes are counted

On Wednesday night, Trump supporters mobbed the Maricopa County polling centre in Phoenix to demand that ballots be counted after reading or hearing false rumours that votes for the president were deliberately not being counted.
They chanted "stop the steal" - there is no proof that the election has been rigged or stolen - and brought up the Sharpiegate rumour, even though it had already been debunked.
The centre was forced to shut its doors due to the crowd outside.
Facebook has blocked hashtags including #stopthesteal.
Trump son shares video linked to QAnon
Trump's son Eric retweeted a video, first circulated by an account linked to the far-right QAnon conspiracy theory, showing ballots being burned.
It was claimed they were ballots cast in Tuesday's election for his father.
"Burning 80 Trump ballots," Eric Trump wrote.
However, that claim was false.
The video does show ballots being torched, but they were sample ballots, according to officials in Virginia.
The account that circulated the video has been suspended by Twitter.
'Dead people' voting claims
Trump lawyer Rudi Giuliani, the disgraced former mayor of New York, has tried to claim that "dead people" voted in Pennsylvania, without any evidence.
He wrote that mail-in voters "could be from Mars as far as we're concerned".
However, there is no evidence of mail-in voting fraud in the state.
Without any proof to back it up, he added: “Philadelphia… has a reputation for voter fraud. You have a reputation for dead people voting.
"We’re going to go look at just how many dead people voted here.”