Elon Musk said advertising revenue on X, the site formerly known as Twitter, “drops massively during war,” according to a post in response to an user’s tweet about her payouts going down.

His comment comes as X faces growing regulatory scrutiny in the European Union over concerns about potential violent or terrorism-related content on the social media platform.

Musk didn’t refer to any specific conflict in his post.

Read more: Musk’s X Probed by EU Over Violent Content About Hamas Attack