Elon Musk deleted a post Monday morning that questioned why former President Donald Trump has faced two apparent assassination attempts in recent months while President Joe Biden and Vice President Kamala Harris have not encountered any.

The Secret Service told the BBC it’s “aware” of Musk’s post, adding, “As a matter of practice we do not comment on matters involving protective intelligence,” the statement added. “We can say, however, that the Secret Service investigates all threats related to our protectees.”

The condemnation was swift. Grassroots political groups DemsMight called the post “literally incitement.” Conservative commentator Jonah Goldberg slammed Musk’s take as “appalling and indefensible,” while former Rep. Adam Kinzinger (R-IL) advised the billionaire to “get help,” adding that his tweet was “unhinged and dangerous.”