Twitter, which is owned by multi-billionaire Elon Musk, has been contacted by Australia's cyber regulator to provide an explanation for how it addresses online hate.
Twitter is now the platform that receives the most complaints, according to the nation's online safety commissioner.
The demand is a result of the watchdog's ongoing effort to hold the social media company more accountable.
Musk promised to uphold free speech on the platform when he purchased the company last year for $44 billion (A$64 billion; £34.5 billion).
According to Julie Inman Grant, one-third of all complaints about online hate involved Twitter, so a legal notice was sent to the company requesting an explanation.
Even though Twitter has a much smaller user base than TikTok, Facebook, and Instagram combined, this is true.
Twitter seems to have failed to address hate, she claimed.
The reinstatement of some of these previously banned accounts, according to reports, has given extreme polarizers, spreaders of outrage and hatred, including neo-Nazis both in Australia and abroad more power, she continued.
When the BBC contacted Twitter for comment regarding the announcement, they did not respond.
Ella Irwin, Twitter's second head of trust and safety who worked for Elon Musk, announced her resignation earlier this month. A month after Mr. Musk assumed leadership, Yoel Roth, her immediate predecessor, retired in November 2022.
The task of content moderation, a subject that has received attention since the takeover, falls under the purview of the head of trust and safety.
Ms. Irwin left Twitter one day after Mr. Musk publicly criticized a content moderation decision, though she hasn't publicly stated why.
He described it as "a mistake by many people at Twitter" to decide to restrict the visibility of a video due to claims of gender misrepresentation.
Whether or not you agree with using someone's preferred pronouns, failing to do so is at the very least impolite and undoubtedly does not violate any laws, he wrote.
A few days later, Mr. Musk was replaced as Twitter's CEO by Linda Yaccarino, a former NBCUniversal executive in charge of advertising.
Additionally, Ms. Irwin's resignation came a week after Facebook withdrew from the voluntary code of conduct established by the European Union to combat disinformation.
Since purchasing Twitter, Mr. Musk has cut about 75% of its staff, including teams responsible for monitoring abuse, and altered the company's verification procedure.
Advertisers have departed in great numbers in the interim.
Ms. Yaccarino is credited with leading industry-wide discussions about data gaps as audiences move online in her former role and for guiding NBCUniversal through the disruption brought on by technology companies, overhauling advertising sales, and reorganizing the company's internal operations.
