The Department of Defense on Monday said it is launching a “thorough review” into Democratic Sen. Mark Kelly, citing “serious allegations of misconduct.”

The announcement comes days after Donald Trump accused Kelly and other Democratic lawmakers of “seditious behavior” for a video in which they said that U.S. service members could refuse illegal orders.

In a statement posted to X, the Department of Defense said it “received serious allegations of misconduct” against Kelly, who is a retired U.S. Navy captain.