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.
Was Robert Mueller Sick Before His Death?
Yes, Mueller was diagnosed with Parkinson’s disease in 2021, his family eventually revealed to The New York Times.
“Bob was diagnosed with Parkinson’s disease in the summer of 2021,” his family told the publication in August 2025. “He retired from the practice of law at the end of that year. He taught at his law school alma mater during the fall of both 2021 and 2022, and he retired at the end of 2022. His family asks that his privacy be respected.”
How Did Robert Mueller Die?
A cause of death was not immediately disclosed for Mueller, but he was battling Parkinson’s disease.
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