A social media post made by US President Donald Trump just before the day of the election was labeled as ‘misleading’ by Twitter and Facebook, news agency AFP reported. The post claimed that mail-in ballots in the key state of Pennsylvania would lead to “rampant” fraud and street violence.

“The Supreme Court decision on voting in Pennsylvania is a VERY dangerous one. It will allow rampant and unchecked cheating and will undermine our entire system of laws. It will also induce violence in the streets. Something must be done!” Trump said in a post on both Twitter and Facebook.

Also Read | Donald Trump’s superstition made him wrap campaign in Michigan again. Or is it a strategy?

The US Supreme Court dealt Trump’s reelection campaign a blow last week when it ruled to allow mail-in ballots in the swing state to be counted up to three days after the actual election night on November 3.

The Republican leader has been vocal about his opposition to mail-in ballots, often claiming without evidence that the process will be rigged against him.

Twitter marked the post with a content warning that said: “Some or all of the content shared in this Tweet is disputed and might be misleading about an election or other civic process.”

Users were required to click through the warning message to see the tweet. Twitter had also added a link to the bottom of Trump’s post where people could “learn how voting by mail is safe and secure.”

Also Read | FBI warns of possible armed clashes in protest-hit Portland on Election Day

Facebook also added a label to Trump’s post, which said, “Both voting by mail and voting in person have a long history of trustworthiness in the US. Voter fraud is extremely rare across voting methods.”

Twitter in recent months has marked a number of Trump tweets as “misleading” or “glorifying violence,” including a post on anti-racism unrest in Minneapolis in May.

Twitter has also appended fact-checks to two of the president’s previous tweets on mail-in voting, sparking a furious reaction from Trump and his right-wing surrogates who accuse social media firms of bias against conservatives.