Ella Irwin, who led Twitter’s trust and safety team since November 2022, has quit the social media company, Reuters said. Irwin was in charge of content moderation.

She joined Twitter in June 2022 and replaced Yoel Roth as the head of trust and safety when he resigned.

Twitter has been under fire for weak content moderation since Elon Musk bought it in October last year. The social media platform is losing advertisers who don’t want to be associated with harmful content. Amid this, Ella Irwin, the head of trust and safety, has quit.

Musk appointed Linda Yaccarino, a former NBC Universal ad boss, as the new CEO of Twitter earlier this month.

Twitter did not comment on Irwin’s resignation and sent a poop emoji in response to an email from Reuters.

Fortune reported that Irwin’s Slack account was deactivated.

Musk slashed costs and fired thousands of Twitter employees after buying it. Many of them were working on preventing illegal and harmful content and ensuring election integrity and accurate information on the platform.

Musk has touted Community Notes, a feature that lets users add context to tweets, as a solution to misleading information on Twitter.

Investors have sued Elon Musk for insider trading, accusing him of using Twitter and other platforms to manipulate the price of dogecoin, a cryptocurrency. They say Musk made billions of dollars by trading dogecoin through wallets that he or Tesla owns.

The lawsuit was filed on Wednesday in a New York federal court. It said Musk used Twitter posts, online influencers, his 2021 appearance on “Saturday Night Live” and other “publicity stunts” to defraud investors and promote himself and his companies.

Musk runs Twitter, Tesla and SpaceX. His lawyer did not comment on the lawsuit. The investors’ lawyers did not respond to requests for comment.

The investors say Musk inflated dogecoin’s price more than 36,000% in two years and then let it drop.

They added their new claims in a revised complaint, in a lawsuit that started last June.