The White House said Monday it is monitoring social media platform Twitter under new CEO Elon Musk for potential misinformation.

“That’s something we’re certainly watching,” White House spokeswoman Karine Jean-Pierre said when asked about Twitter’s evolution into a supposed vehicle of ‘disinformation’.

Jean-Pierre said social media platforms have a responsibility “to make sure when it comes to misinformation when it comes to the hate that we see, that … they take action and that they continue to take action.”

Musk, who has reinstated a number of previously disabled Twitter accounts, said last weekend the number of new users signing up “was at an all-time high.” However, there has been a mass exodus of advertisers over concerns about data verification and hate speech that Musk attributes to activist groups lobbying companies that advertise on Twitter.

“We’re all watching this closely,” Jean-Pierre told reporters at the White House. “Social media companies have a responsibility to prevent their platforms from being used by users who seek to incite violence, particularly violence that targets specific communities.”