A former U.S. special counsel, Robert S. Mueller III, has been diagnosed with Parkinson’s disease, according to his family, complicating his ability to comply with congressional subpoenas related to past investigations. The 81-year-old former FBI director was first informed of the condition four years ago, with recent developments including speech difficulties and mobility challenges.

Mueller’s family released a statement to The New York Times, confirming his diagnosis and noting that he retired from legal practice in late 2021. They emphasized his retirement from teaching at his law school alma mater by the end of 2022 and requested privacy for the family. The House Oversight Committee had previously issued a subpoena for Mueller to testify about the FBI’s handling of the Jeffrey Epstein investigation, but the request was withdrawn following his health concerns.

The situation has drawn scrutiny, with critics questioning whether Mueller’s medical condition is genuine or a strategic move to avoid testimony. Some have referenced his 2019 congressional appearance, where he displayed signs of difficulty communicating and answering questions. Parkinson’s disease, which typically affects individuals over 60, can lead to speech impairments and mobility issues, though early symptoms may be managed.

Mueller’s role as special counsel during the Russia collusion investigation remains a focal point of political debate, with ongoing calls for transparency from lawmakers. The House Oversight Committee has issued subpoenas to multiple figures, including former officials tied to the Trump administration, as part of broader inquiries into past federal actions.