US President Donald Trump has been permanently suspended from Twitter "as a result of risk of further incitement of violence", the company says.
Twitter said the decision was made "after close review of latest Tweets from the @realDonaldTrump account".
It comes amid a good Big Tech purge of the web platforms used by Mr Trump and his supporters.
Some lawmakers and celebrities have been calling for a long time on Twitter to ban Mr Trump altogether.
Former First Woman Michelle Obama tweeted about Thursday that the Silicon Valley giants should stop enabling Mr Trump's "monstrous behaviour" and permanently expel him.
Mr Trump was locked away of his account for 12 hours on Wednesday after he called the people who stormed the US Capitol "patriots".
A huge selection of his supporters entered the complex seeing as the US Congress attemptedto certify Joe Biden's success found in the presidential election. The ensuing violence led to the deaths of four civilians and a police officer.
Twitter warned in that case that it would ban Mr Trump "permanently" if he breached the platform's rules again.
After being allowed again on Twitter, Mr Trump posted two tweets on Friday that the business cited as the finals straws.
In a single, he wrote: "The 75,000,000 great American Patriots who voted for me, AMERICA FIRST, and MAKE AMERICA Superb AGAIN, will have a huge VOICE long in to the future. They'll not be disrespected or cared for unfairly in any way, condition or form!!!"
Twitter said this tweet "has been interpreted seeing as further indication that President Trump does not plan to facilitate an 'orderly changeover'".
In the next, the president tweeted: "To all or any of those who've asked, I will not be likely to the Inauguration on January 20th."
Twitter said this is "being received by several his supporters seeing that further confirmation that the election had not been legitimate".
Twitter said both these tweets were "in violation of the Glorification of Violence Policy".
After Twitter had permanently suspended his @realDonaldTrump account, Mr Trump tweeted from the US president's official @Potus account suggesting he'd "look at the likelihood of building out our own platform later on" and railing against Twitter.
However the tweets were taken off the platform when they were posted.