Social networking and microbloging site Twitter has refused to unlock American news outlet, the New York Post's account since Wednesday unless the outlet deletes six tweets about its reporting on Hunter Biden, son of 2020 Democratic nominee Joe Biden.
Both the San Francisco-based social media platform and Facebook came under fire this week after the two blocked users from sharing a New York Post article showing purported communication between Hunter Biden, and an adviser to a Ukrainian energy company, reports the Fox Business.
Hunter Biden's work in the US while his father was vice president was at the heart of US President Donald Trump's impeachment trial earlier this year.
House Democrats accused Trump of improperly attempting to condition US aid on an investigation into Biden, then a contender in the party's presidential primaries, by the Ukrainian government.
"Anyone who looks at The Post's Twitter feed can't even see the tweets about the Biden stories, which have been replaced by messages saying, 'This Tweet is no longer available,'" the Post wrote on Friday.
Twitter confirmed that the Post "has been informed what is necessary to unlock their account."
The company previously said the outlet's stories on Hunter Biden violate the website's Hacked Media Policy against displaying "hacked" information.
The New York Post has called the allegation "baseless."
Twitter updated that policy on Friday, saying it will start labeling content that violates its rules rather than remove it altogether, "unless it is directly shared by hackers or those acting in concert with them."
"While we've updated the policy, we don't change enforcement retroactively. You will still need to delete the Tweets to regain access to your account," Twitter wrote in a statement to the Post.
Facebook said it was reducing distribution of the New York Post's article while the platform's independent, third-party fact-checkers determine its credibility.
Republican lawmakers this week urged Facebook and Twitter to explain the decision to block the Post's reporting. Republican Missouri Senator Josh Hawley invited the CEOs of both companies, Mark Zuckerberg and Jack Dorsey, to testify before Congress about their respective decisions.