The inciting incident for Elon Musk’s controversial (and now deleted) post was the most recent assassination attempt against former president Donald Trump.

In response to this, Musk posted the following comment: “And no one is even trying to assassinate Biden/Kamala.” Like all trolls, Musk later implied that his incendiary post was merely a joke, but the Secret Service is not laughing and has begun to investigate the X CEO.

Regarding the Elon Musk post, the Secret Service previously confirmed that they were “aware” of the assassination comment. They refused to comment further, though, citing “matters involving protective intelligence.” Somewhat ominously (at least, for Musk), they also stated that their agency “investigates all threats related to our protectees.”