Image Credit: Getty Images Robert Mueller, the former FBI director and lawyer, died at the age of 81 on March 20, 2026, multiple outlets reported the following day. Mueller's probe into Trump's election led to a series of criminal cases against people close to the Republican president, who reacted to the news of his death via Truth Social. "Robert Mueller just died. Good, I'm glad he's dead. He can no longer hurt innocent people!" Trump wrote via Truth Social on March 21, 2026. Below, learn what we know so far about Mueller's death and final years.