The U.S. attorney for Washington, D.C. — Ed Martin, who was appointed by President Donald Trump — has launched an inquiry into a critical comment Rep. Robert Garcia, D-Long Beach, recently made about Elon Musk.

Garcia, formerly Long Beach’s mayor and currently the representative for the 42nd Congressional District, has been a staunch anti-Trump advocate since he took office. But now, he is apparently being investigated for criticizing Musk during a CNN interview, which some have apparently viewed as threatening toward the Trump ally, according to a letter from Martin.

Garcia, for his part, said the comment in question — in which weapons and a bar fight are mentioned — was figurative.

The U.S. attorney’s office and the White House did not return requests for comment.