Twitter has temporarily locked US President Donald Trump's account, saying the tweets he posted violated its policy.
The social media giant said on Wednesday that it had blocked access to three of Trump's tweets and asked him to remove them.
Twitter said the president had committed "severe violations" of its Civic Integrity policy. It said the decision was "a result of the unprecedented and ongoing violent situation in Washington DC."
Twitter said Trump's account would be locked until 12 hours after he deletes those tweets, and warned that future violations would result in permanent suspension.
Trump said in a video posted on Twitter, "We had an election stolen from us. It was a landslide election, and everyone knows it, especially the other side."
Facebook removed the video. Its vice president of integrity, Guy Rosen, wrote that this is an "emergency situation," and the video "contributes to rather than diminishes the risk of ongoing violence."
Facebook suspended Trump from posting to its platform for 24 hours.
YouTube also deleted the video, saying it violated its policy against content that alleges widespread fraud changed the outcome of the 2020 presidential election.