Lindell, a close ally of former President Donald Trump, had been using his Twitter account to spread disinformation about the 2020 presidential election, including false claims of voter fraud.
An image that seems to threaten former President Donald Trump has prompted Twitter to deactivate an account linked to Ayatollah Ali Khamenei. The image also appears on Khameini's website.
Twitter has suspended more than 70,000 accounts spreading the QAnon conspiracy theory since Friday. Facebook is removing content with the phrase "stop the steal."
The social media giant says it will not allow tweets containing "unsubstantiated rumors, disputed claims" or promotion of "out of context information" about the vaccine.
Takahiro Shiraishi murdered and dismembered eight women and one man in his apartment near Tokyo. He used Twitter to lure most of his victims, promising he could help them kill themselves.
False claims about COVID-19 vaccines are spreading widely on social media, researchers warn. They could undermine public health efforts to curb the pandemic.
The Senate Judiciary Committee grilled Facebook's Mark Zuckerberg and Twitter's Jack Dorsey over how they handle false and misleading claims about the election, including from President Donald Trump.
Backed by Rebekah Mercer, Parler is now one of the most downloaded smartphone apps, as conservatives complaining of censorship by Facebook and Twitter seek out other social media alternatives.
Ahead of Election Day, the social network put in place several measures to fight the spread of false claims. On Thursday it shared data showing some of its changes were effective.
Facebook, Twitter, YouTube and TikTok have stepped up efforts to curb the spread of misinformation about the election, but researchers say falsehoods thrive nearly unchecked on live videos.
Twitter permanently suspended an account from former Trump adviser Steve Bannon after he suggested Dr. Anthony Fauci and FBI Director Christopher Wray should be beheaded.